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Category 1

-> Mokhatlo oa Machaba oa Arctic Social Sciences (IASSA)

-> Mokhatlo oa Machaba oa Saense ea Molao (IALS)

-> International Astronomical Union (IAU)

-> Mokhatlo oa Machaba oa Litšoantšo oa Litšoantšo (ICA)

-> Komisi ea Machaba ea Optics (ICO)

-> Khomishene ea Machabeng ea Leseli (CIE)

-> Lekhotla la Machabeng la Liindasteri le Lipalo tse Sebelisitsoeng (ICAM)

-> Mokhatlo oa Machaba oa Mekhatlo bakeng sa Microscopy (IFSM)

-> International Geographical Union (IGU)

-> Mokhatlo oa Machaba oa Lipalo (IMU)

-> Mokhatlo oa Machaba oa Patlisiso ea Khotso (IPRA)

-> Mokhatlo oa Machaba oa Saense ea Lipolotiki (IPSA)

-> Mokhatlo oa Machaba oa Photogrammetry le Remote Sensing (ISPRS)

-> International Sociological Association (ISA)

-> Mokhatlo oa Machaba oa Saense ea 'Mele le Boenjiniere ho Bongaka (IUPESM)

-> Mokhatlo oa Machaba oa Biophysics e Pure and Applied (IUPAB)

-> Mokhatlo oa Machaba oa Patlisiso ea Quaternary (INQUA)

-> Mokhatlo oa Machaba oa Thuto ea Saense ea Baahi (IUSSP)

-> Mokhatlo oa Machaba oa Motheo le Clinical Pharmacology (IUPHAR)

-> Mokhatlo oa Machaba oa Lisaense tsa Baeloji (IUBS)

-> Mokhatlo oa Machaba oa Crystallography (IUCr)

-> Mokhatlo oa Machaba oa Saense ea Lijo le Theknoloji (IUFoST)

-> Mokhatlo oa Machaba oa Mekhatlo ea Lipatlisiso tsa Meru (IUFRO)

-> Mokhatlo oa Machaba oa Geodesy le Geophysics (IUGG)

-> Mokhatlo oa Machaba oa Saense ea Geological (IUGS)

-> Mokhatlo oa Machaba oa Histori le Filosofi ea Saense le Theknoloji (IUHPST)

-> Mokhatlo oa Machaba oa Mekhatlo ea Immunological Societies (IUIS)

-> Mokhatlo oa Machaba oa Mekhatlo ea Patlisiso ea Lintho (IUMRS)

-> International Union of Microbiological Societies (IUMS)

-> Mokhatlo oa Machaba oa Saense ea Phepo (IUNS)

-> Mokhatlo oa Machaba oa Physiological Sciences (IUPS)

-> Mokhatlo oa Machaba oa Psychological Science (IUPsyS)

-> Mokhatlo oa Machaba oa Chemistry e Hloekileng le e Sebelisitsoeng (IUPAC)

-> Mokhatlo oa Machaba oa Fisiks e Hloekileng le e Sebelisitsoeng (IUPAP)

-> Mokhatlo oa Machaba oa Radio Science (URSI)

-> Mokhatlo oa Machaba oa Saense ea Mobu (IUSS)

-> Mokhatlo oa Machaba oa Speleology (UIS)

-> Mokhatlo oa Machaba oa Theoretical and Applied Mechanics (IUTAM)

-> Mokhatlo oa Machaba oa Toxicology (IUTOX)

-> Mokhatlo oa Lithuto tsa Sechaba tsa Saense (4S)

-> World Anthropological Union (WAU)