| Acronym |
Sense |
Language |
Topics |
| IOF |
Initial Operational Flight |
In English |
→ Aeronautics, aircraft
→ Astronautics |
| IOM |
Interoceanmetal Joint Organization |
In English |
→ Organizations and associations
→ Marine research, oceanography
→ Mining |
| IOM |
Istituto Officina dei Materiali (https://www.iom.cnr.it/) |
In Italian |
→ Research institutes
→ Materials science
→ Italia |
| IOMAC |
Indian Ocean Marine Affairs Cooperation |
In English |
→ International relations
→ Marine research, oceanography
→ Fishing, hunting |
| IONDS |
Integrated Operational Nuclear Detection System |
In English |
→ Nuclear technology |
| IOS |
Indian Ocean Ship |
In English |
→ 6295 |
| IOT |
Ingeniørhøjskolen Odense Teknikum |
In Danish |
→ Engineering, technology |
| IOT |
Individuum Organisation Technologie |
In German |
→ Computer science
→ 659 |
| IOT |
Instituto de Ortopedia e Traumatologia |
In Portuguese |
→ Surgery, orthopaedics, ophthalmology |
| IOT |
Institut für Oberflächentechnik |
In German |
→ Engineering, technology |
| IOT |
Intervenção Operacional de Acessibilidade e Transportes |
In Portuguese |
→ Transport and postal services |
| IOT |
Indiana Office of Technology (www.in.gov/iot/) |
In English |
→ Engineering, technology
→ United States |
| IOT |
Intubation Orotrachéale |
In French |
→ Medicine |
| IP |
Instructor Pilot |
In English |
→ Education
→ Aeronautics, aircraft
→ Astronautics |
| IP |
Instrument Payload |
In English |
→ Astronautics |
| IPA |
Internet Privatstiftung Austria |
In German |
→ Foundations
→ Internet
→ Telecommunications
→ Austria |
| IPA |
Fraunhofer-Institut für Produktionstechnik und Automatisierung |
In German |
→ Research institutes
→ Engineering, technology |
| IPA |
Information-technology Promotion Agency |
In English |
→ Computer science
→ Telecommunications |
| IPA |
India Pale Ale |
In English |
→ Beverage industry |
| IPA |
Independent Pilots Association |
In English |
→ Associations
→ Aeronautics, aircraft |
| IPA |
Independent Practice Association |
In English |
→ Associations
→ Medicine |
| IPA |
International Publishers' Association |
In English |
→ Associations
→ Graphic industries, printing, publishing |
| IPACS |
Integrated Power and Attitude Control System |
In English |
→ Astronautics |
| IPAD |
Integrated Program for Aerospace Vehicle Design |
In English |
→ Aeronautics, aircraft
→ Astronautics |
| IPATIMUP |
Instituto de Patologia e Imunologia Molecular da Universidade do Porto |
In Portuguese |
→ Biological sciences
→ Pathology |
| IPB |
Imprimerie Papeterie Boudard |
In French |
→ Graphic industries, printing, publishing |
| IPBS |
Isotopes in the Physical and Biomedical Sciences |
In English |
→ Serial publications, periodicals
→ Radioactivity
→ Biological sciences
→ Medicine |
| IPC |
Instituto de Polimeros e Compositos |
In Portuguese |
→ Plastic industry
→ Experimental chemistry
→ Organic chemistry |
| IPC |
Institut Polytechnique de Conakry |
In French |
→ Specialized or polytechnical colleges
→ Engineering, technology |
| IPC |
Iraq Petroleum Company |
In English |
→ 665 |
| IPC |
Institut de Pathologie du Cheval |
In French |
→ Research institutes
→ Veterinary medicine
→ Zoology |
| IPCAA |
International Pharmaceutical Congress Advisory Association |
In English |
→ Associations
→ Congresses
→ Pharmacology, toxicology |
| IPCF |
Istituto per i Processi Chimico-Fisici |
In Italian |
→ Chemistry
→ Chemical technology |
| IPCRP |
IEE Proceedings: Communications and Radar Processing |
In English |
→ Serial publications, periodicals
→ Electrical engineering
→ Telecommunications |
| IPCRS |
IEE Proceedings: Communications Radar and Signal Processing |
In English |
→ Serial publications, periodicals
→ Electrical engineering
→ Telecommunications |
| IPCTA |
IEE Proceedings: Control Theory Applications |
In English |
→ Serial publications, periodicals
→ Mathematics and natural sciences |
| IPCUP |
Institutul Naţional de Cercetare-Dezvoltare pentru Utilaj Petrolier |
In Romanian |
→ 665 |
| IPE |
Ingénierie du Parc en Exploitation |
In French |
→ Energy economics |
| IPE-LAS |
Institute of Physical Energetics - Latvian Academy of Sciences |
In English |
→ Optics
→ Energy economics |
| IPEA |
Internet Positionning European Association |
In English |
→ Associations
→ Internet
→ 659 |
| IPEC |
Interpolyelectrolyte Complex |
In English |
→ Chemistry
→ Chemical technology |
| IPEPA |
IEE Proceedings: Electric Power Applications |
In English |
→ Serial publications, periodicals
→ Electrical engineering |
| IPER |
Institut Portuaire d'Études et de Recherche |
In French |
→ Transport and postal services |
| IPER |
Innovation dans les Processus de l'Entreprise par la RFID |
In English |
→ Networks, communication
→ Telecommunications |
| IPFA |
International Plasma Fractionation Association |
In English |
→ Associations
→ Pharmacology, toxicology |
| IPGTD |
IEE Proceedings: Generation, Transmission, Distribution |
In English |
→ Serial publications, periodicals
→ Engineering, technology |
| IPH |
Institute of Public Health |
In English |
→ Public health and hygiene |
| IPHC |
International Pacific Halibut Commission (www.iphc.washington.edu) |
In English |
→ Fishing, hunting |
| IPI |
Istituto per la Promozione Industriale |
In Italian |
→ Industry, industrial policy
→ Engineering, technology |
| IPK |
Institut für Produktionsanlagen und Konstruktionstechnik (www.ipk.fraunhofer.de) |
In German |
→ Research institutes
→ Construction
→ Germany |
| IPL |
Institut Pasteur de Lille (www.pasteur-lille.fr) |
In French |
→ Research institutes
→ Biological sciences
→ Medicine
→ France |
| IPM |
Integrated Pest Management |
In English |
→ Management
→ Agricultural sciences |
| IPM |
Internet et Pédagogie Médicale |
In French |
→ Internet
→ Education
→ Medicine |
| IPMAP |
IEE Proceedings: Microwaves Antennas and Propagation |
In English |
→ Serial publications, periodicals
→ Telecommunications |
| IPMB |
Intelligent Platform Management Bus |
In English |
→ Electronics
→ Networks, communication |
| IPMOA |
IEE Proceedings: Microwaves Optics and Antennas |
In English |
→ Serial publications, periodicals
→ Optics
→ Telecommunications |
| IPMP |
Investigations into Polymer Membrane Processing |
In English |
→ Chemical technology
→ Plastic industry |
| IPN |
Interpenetrating Polymer Network |
In English |
→ Plastic industry |
| IPN |
Imprimerie Presse Nouvelle |
In French |
→ Graphic industries, printing, publishing |
| IPOpt |
IEE Proceedings: Optoelectronics |
In English |
→ Serial publications, periodicals
→ Optics
→ Electronics |
| IPP |
Incapacité Permanente Partielle |
In French |
→ Pathology
→ Labour, labour economics |
| IPP |
Independent Power Producer |
In English |
→ Energy economics |
| IPP |
identifiant Permanent Patient |
In French |
→ Computer science
→ Medicine |
| IPPS |
International Plant Propagators Society |
In English |
→ Organizations and associations
→ Agricultural sciences |
| IPPS |
International Pelvic Pain Society |
In English |
→ Organizations and associations
→ Pathology |
| IPPS |
Internationaler-Prostate-Symptom-Score |
In German |
→ Pathology |
| IPPS |
The International Plant Propagators Society |
In English |
→ Organizations and associations
→ Agricultural sciences |
| IPPT |
Instytut Podstawowych Problemów Techniki (www.ippt.gov.pl) |
In Polish |
→ Research institutes
→ Engineering, technology
→ Poland |
| IPRSP |
IEE Proceedings: Radar and Signal Processing |
In English |
→ Serial publications, periodicals
→ Telecommunications |
| IPS |
Instrumentation Power System |
In English |
→ Electrical engineering |
| IPS |
Integrated Propulsion System |
In English |
→ Vehicle engineering |
| IPS |
Inverter Power Supply |
In English |
→ Electrical engineering |
| IPS |
Institut Paul Scherrer
= GEKT | Grupoj Eŭropaj je Koopero Teritoria | In Esperanto
= PSI | Paul Scherrer Institut | In German
= GECT | Groupement Européen de Coopération Transfrontalière | In French
|
In French |
→ Mathematics and natural sciences |
| IPS |
Ingénieur Prévention Sécurité |
In French |
→ Accidents, risks, safety |
| IPSA |
Institut Polytechnique des Sciences Avancées |
In French |
→ Specialized or polytechnical colleges
→ Engineering, technology |
| IPSI |
Institut pour la Promotion des Sciences de l'Ingénieur (www.ipsi-cetim.fr) |
In French |
→ Research institutes
→ Engineering, technology |
| IPSM |
Institut Prince Sidi Mohammed (des Techniciens Spécialisés en Gestion et en Commerce Agricole) |
In French |
→ Specialized or polytechnical colleges
→ Agricultural sciences |
| IPSN |
Institut de Protection et de Sûreté Nucléaire |
In French |
→ Nuclear technology |
| IPSSE |
IEE Proceedings: Solid-State Electron Devices |
In English |
→ Serial publications, periodicals
→ Electronics |
| IPT |
Incapacité Permanente Totale |
In French |
→ Pathology
→ Labour, labour economics |
| IPT |
Instituto de Pesquisas Tecnológicas (www.ipt.br) |
In Portuguese |
→ Research institutes
→ Fishing, hunting
→ Brazil |
| IPTEA |
Internacia Poŝtista kaj Telekomunikista Esperanto-Asocio |
In Esperanto |
→ Associations
→ Telecommunications
→ Transport and postal services
→ Artificial languages (linguistics) |
| IPTL |
IEEE (Institute of Electrical and Electronics Engineers) Photonics Technology Letters |
In English |
→ Serial publications, periodicals
→ Optics
→ Telecommunications |
| IPTL |
Institut Pédagogique Transport Logistique |
In French |
→ Maintenance and logistics
→ Transport and postal services |
| IPTM |
Institut des Professions Techniques et Médicales (www.iptm.ma) |
In French |
→ Specialized or polytechnical colleges
→ Medicine
→ Morocco |
| IPTM |
Instituto Portuário e dos Transportes Marítimos |
In Portuguese |
→ Central administration
→ Transport by water
→ Portugal |
| IPTR |
In-Process Technical Review |
In English |
→ Engineering, technology |
| IPTS |
Indicateur de Prix des Travaux Souterrains |
In French |
→ Prices
→ Civil engineering |
| IQ |
Intellectual Quotient |
In English |
→ Neurology |
| IR |
Interchangeability and Replaceability |
In English |
→ Engineering, technology |
| IR&D |
Independent Research and Development |
In English |
→ Research policy
→ Engineering, technology |
| IRA |
Insuffisance Rénale Aiguë |
In French |
→ Pathology |
| IRA |
Infection Respiratoire Aiguë |
In French |
→ Chest diseases |
| IRAB |
Infection Respiratoires Aiguë Basse |
In French |
→ Infectious diseases |
| IRANSAT |
Iranian government communications satellite |
In English |
→ Astronautics
→ Telecommunications |
| IRAS |
Infrared Astronomical Satellite |
In English |
→ Astronomy
→ Astronautics |
| IRB |
Institutional Review Board |
In English |
→ Ethics
→ Medicine |
| IRBD |
International River Basin District |
In English |
→ 341224
→ 626
→ 627 |
| IRBM |
Intermediate-Range Ballistic Missile |
In English |
→ Military engineering |
| IRBM |
Intermediate Range Ballistic Missile |
In English |
→ Military engineering |
| IRBS |
Intermediate-Range Ballistic System |
In English |
→ Military engineering |
| IRBS |
Intermediate-Range Booster System |
In English |
→ Astronautics |
| IRC |
Innovation Relay Centre |
In English |
→ Engineering, technology |
| IRC |
Insufisance Rénale Chronique |
In French |
→ Pathology |
| IRCA |
Innovation Relay Centre Austria (www.irca.at) |
In English |
→ Mathematics and natural sciences
→ Austria |
| IRCAD |
Institut de Recherche contre les Cancers de l'Appareil Digestif (https://www.ircad.fr/) |
In French |
→ Research institutes
→ Oncology
→ France |
| IRCAM |
Institut de Recherche et Coordination Acoustique/Musique (www.ircam.fr) |
In French |
→ Research institutes
→ Music
→ Acoustical engineering
→ France |
| IRCCyN |
Institut de Recherche en Communications et Cybernétique de Nantes (www.irccyn.ec-nantes.fr) |
In French |
→ Research institutes
→ Telecommunications
→ Electronics
→ France |
| IRCFE |
Infrared Communications Flight Experiment |
In English |
→ Astronautics
→ Telecommunications |
| IRCOBI |
International Research COmmittee on Biokinetics of Impact |
In French |
→ Transport and postal services |
| IRCOM |
Institut des relations publiques et de la communication |
In French |
→ Higher education, universities
→ 659 |
| IrDA |
Infrared Data Association |
In English |
→ Associations
→ Telecommunications |
| IRE |
INstitute of Radio Engineers |
In English |
→ Telecommunications |
| IRE |
Institutul Naţional Român pentru Studiul Amenajării şi Folosirii Surselor de Energie |
In Romanian |
→ Organizations and associations
→ Energy economics |
| IREP |
Institut de Recherches et d'Études Publicitaires |
In French |
→ Advertising |
| IRESP |
Institut de Recherche en Santé Publique |
In French |
→ Pharmacology, toxicology |
| IREX |
Institut pour la Recherche appliquée et l'EXpérimentation en génie civil |
In French |
→ Civil engineering |
| IRIG |
Interrange Instrumentation Group |
In English |
→ Engineering, technology |
| IRIS |
Immobilisations Regroupées et Inventoriées sous SAP |
In French |
→ Software
→ Accounting |
| IrJST |
Iranian Journal of Science and Technology |
In English |
→ Serial publications, periodicals
→ Mathematics and natural sciences
→ Engineering, technology |
| IRM |
Imagerie par Résonance Magnétique
= MRI | Magnetic Resonance Imagery | In English
|
In French |
→ Medicine
→ Nuclear, atomic, and molecular physics |
| IRM |
Idéale Résidence Mobile |
In French |
→ Construction |
| IRNIK |
Institut für das Recht der Netzwirtschaften, Informations- und Kommunikationstechnologie (www.irnik.de) |
In German |
→ Research institutes
→ Law, jurisprudence
→ Computer science
→ Telecommunications |
| IRPC |
Incubateur Régional de Poitou-Charentes |
In French |
→ Research policy
→ Engineering, technology
→ France |
| IRR |
Integral Rocket Ramjet |
In English |
→ Astronautics |
| IRRI |
International Rice Research Institute (www.irri.org) |
In English |
→ Research institutes
→ Agricultural sciences |
| IRRI |
International Rice Reserch Institute |
In English |
→ Agricultural sciences |
| IRSC |
Instituts de recherche en santé du Canada (www.cihr.ca)
= CIHR | Canadian Institutes of Health Research | In English
|
In French |
→ Research institutes
→ Biological sciences
→ Medicine
→ Canada |
| IRSEEM |
Institut de Recherche en Systèmes Électroniques Embarqués |
In French |
→ Research institutes
→ Electronics |
| IRSN |
Institut de Radioprotection et de Sécurité Nucléaire |
In French |
→ Research institutes
→ Nuclear technology |
| IRSST |
Institut de recherche Robert-Sauvé en santé et sécurité du travail (https://www.irsst.qc.ca) |
In French |
→ Research institutes
→ Medicine
→ Accidents, risks, safety
→ Canada |
| IRT |
Insuffisance Rénale Terminale |
In French |
→ Physiology
→ Pathology |
| IRT |
Institut für Rundfunktechnik (www.irt.de) |
In German |
→ Research institutes
→ Telecommunications
→ Germany |
| IRWA |
Iowa Rural Water Association (www.iarwa.org) |
In English |
→ Associations
→ Environmental technology, water supply, waste management |
| IS |
Installation Support |
In English |
→ Engineering, technology |
| IS |
Instrumentation System |
In English |
→ Engineering, technology |
| IS |
Integrated Satellite |
In English |
→ Astronautics |
| IS |
Intervention de Sécurité |
In French |
→ Accidents, risks, safety |
| ISA |
Institut Supérieur d'Agriculture |
In French |
→ Agricultural sciences |
| ISA |
International Seabed Authority (www.isa.org.jm) |
In English |
→ Organizations and associations
→ International relations
→ Marine research, oceanography
→ Mining |
| ISAE |
Institut Supérieur de l'Aéronautique et de l'Espace (www.isae.fr) |
In French |
→ Specialized or polytechnical colleges
→ Aeronautics, aircraft
→ Astronautics
→ France |
| ISAI |
Institute of Scrap Recycling Industries (www.isri.org) |
In English |
→ Organizations and associations
→ Environmental technology, water supply, waste management
→ Electronics |
| ISAS |
Institute of Space and Astronautical Science (www.isas.jaxa.jp) |
In English |
→ Research institutes
→ Astronomy
→ Astronautics
→ Japan |
| ISAS |
Institut für Sensor- und Aktuatorsysteme |
In German |
→ Electronics |
| ISAT |
Institut Spécialisé d'Aviation et de Tourisme (www.isat.ma) |
In French |
→ Specialized or polytechnical colleges
→ Tourism
→ Transport and postal services
→ Morocco |
| ISATS |
Integration Spacecraft Automated Test System |
In English |
→ Astronautics |
| ISBRv |
International Space Business Review |
In English |
→ Serial publications, periodicals
→ Astronomy
→ Astronautics |
| ISBST |
Institut Supérieur de Biotechnologie de Sidi Thabet (www.isbst.rnu.tn) |
In French |
→ Specialized or polytechnical colleges
→ Biotechnology
→ Tunisia |
| ISC |
Institut des Sciences Cognitives |
In French |
→ Biological sciences
→ Neurology |
| ISCCP |
International Satellite Cloud Climatology Project (http://isccp.giss.nasa.gov) |
In English |
→ Astronautics
→ Meteorology, climatology |
| ISCN |
Institut de Chimie des Substances Naturelles |
In French |
→ Chemistry
→ Chemical technology |
| ISCOM |
Institut Supérieur de Communication et Publicité |
In French |
→ Higher education, universities
→ 659 |
| ISCPA |
Institut Supérieur de la Communication, de la Presse et de l'Audiovisuel |
In French |
→ Newspapers, journalism
→ Higher education, universities
→ 659
→ Arts |
| ISCTVBANDO |
Inspecţia de Stat pentru Controlul Tehnic Vitivinicol şi al Băuturilor Alcoolice Naturale cu Denumiri de Origine |
In Romanian |
→ Agricultural sciences |
| ISDB |
Integrated Services Digital Broadcasting |
In English |
→ Telecommunications |
| ISDN |
Integrated Services Digital Network |
In English |
→ Telecommunications |
| ISDP |
IntelliLight Shared Dual Path |
In English |
→ Networks, communication
→ Telecommunications |
| ISDP |
International Society of Dermatopathology (www.intsocdermpath.org) |
In English |
→ Organizations and associations
→ Dermatology |
| ISDX |
Interactive Surface Design eXtension |
In English |
→ Software
→ Engineering, technology |
| ISE |
Iniziative Sviluppo Energie |
In Italian |
→ Energy economics
→ Electrical engineering |
| ISEM |
Institut des Sciences de l'Entreprise de Montpellier (www.isem.univ-montp1.fr) |
In French |
→ Specialized or polytechnical colleges
→ Trade
→ Accounting
→ France |
| ISEM |
Institut Supérieur d'Études Maritimes (www.isem.ac.ma) |
In French |
→ Specialized or polytechnical colleges
→ Transport and postal services
→ Morocco |
| ISEN |
Institut Supérieur d'Électronique et du Numérique |
In French |
→ Computer-based techniques
→ Electronics |
| ISEO |
International Sustainable Energy Organisation |
In English |
→ Energy economics |
| ISEP |
Institut Supérieur d'Électronique de Paris (www.isep.fr) |
In French |
→ Specialized or polytechnical colleges
→ Electrical engineering
→ France |
| ISES |
International Solar Energy Society |
In English |
→ Energy economics |
| ISET |
Institut für Solare Energieversorgungstechnik |
In German |
→ Energy economics |
| ISETEC |
Innovative Seehafentechnologien |
In German |
→ 627 |
| ISF |
Ingénieurs Sans Frontières |
In French |
→ Organizations and associations
→ Engineering, technology |
| ISF |
Industrial Space Facility |
In English |
→ Astronomy
→ Astronautics |
| ISFC |
International Baltic Sea Fishery Commission (www.ibsfc.org) |
In English |
→ International relations
→ Fishing, hunting |
| ISFORT |
Institut Supérieur de Formation en Technologie Alimentaire (www.isfort.ac.ma) |
In French |
→ Specialized or polytechnical colleges
→ Food technology
→ Morocco |
| ISFTA |
Institute for Solid Fuels Technology and Applications |
In English |
→ Vehicle engineering |
| ISG |
Intervention de Sécurité Gaz |
In French |
→ Energy economics |
| ISH |
International Society of Hypertension (https://www.ish-world.com) |
In English |
→ Research institutes
→ Cardiology |
| ISH |
Isolated Systolic Hypertension |
In English |
→ Cardiology |
| ISH |
International Sanitation and Heating (http://https://ish.messefrankfurt.com/) |
In English |
→ Congresses
→ Environmental technology, water supply, waste management
→ Germany |
| ISH |
International Society for Hypnosis (https://www.ishhypnosis.org) |
In English |
→ Organizations and associations
→ Psychology
→ Psychiatry |
| ISHEASTM |
International Society for the History of East Asian Science Technology and Medicine |
In English |
→ Organizations and associations
→ History
→ Medicine
→ Engineering, technology |
| ISHR |
Interstate Home Slot Racing |
In English |
→ Automobile manufacturing |
| ISHR |
Institute for Health System Research |
In English |
→ Public health and hygiene |
| ISHS |
International Society for Horticultural Science |
In English |
→ Organizations and associations
→ Horticulture |
| ISI |
Initial Systems Installation |
In English |
→ Engineering, technology |
| ISI |
Integral Satcom Initiative |
In English |
→ Astronautics |
| ISIC |
Institut Supérieur de l'Information et de la Communication (www.isic.ac.ma) |
In French |
→ Specialized or polytechnical colleges
→ 659
→ Morocco |
| ISIR |
Institut des Systèmes Intelligents et Robotique |
In French |
→ Research institutes
→ Mechanical engineering
→ Electronics |
| ISIR |
International Society for Intelligence Research |
In English |
→ Organizations and associations
→ Neurology |
| ISIR |
International Society for Interferon-Research |
In English |
→ Organizations and associations
→ Biochemistry, biophysics
→ Medicine |
| ISIR |
Institut des Systèmes Intelligents et de Robotique (www.isir.upmc.fr) |
In French |
→ Research institutes
→ Artificial intelligence
→ Electronics |
| ISIR |
International Society for Immunology of Reproduction |
In English |
→ Organizations and associations
→ Immunology and allergy
→ Reproductive biology |
| ISIR |
Institute of Scientific and Industrial Research |
In English |
→ Research policy
→ Engineering, technology |
| ISIS |
Ingénierie des Systèmes d'Information et de Sécurité |
In French |
→ Computer science
→ Telecommunications |
| ISIS |
International Society of Infant Studies |
In English |
→ Organizations and associations
→ Education
→ Pediatry |
| IsJT |
Israel Journal of Technology |
In English |
→ Serial publications, periodicals
→ Engineering, technology |
| ISL |
Inertial Systems Laboratory |
In English |
→ Research institutes
→ Mechanical engineering |
| ISM |
ISDN (Integrated Services Digital Network) Standards Management |
In English |
→ Networks, communication
→ Telecommunications |
| ISM |
Institut Supérieur Maritime |
In French |
→ Specialized or polytechnical colleges
→ Marine research, oceanography
→ 627
→ Vehicle engineering |
| ISMCS |
International Society for Mechanical Circulatory Support (https://www.ismcs.org)
= ISRBP | International Society for Rotary Blood Pumps | In English
|
In English |
→ Organizations and associations
→ Mechanical engineering
→ Blood and circulatory system
→ Cardiology |
| ISN |
Innovation Service Network GmbH (www.innovation.at) |
In English |
→ Engineering, technology
→ Austria |
| ISO |
Infrared Space Observatory |
In English |
→ Astronautics
→ Astronomy |
