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- Akademii︠a︡ nauk SSSR15
- International Atomic Energy Agency14
- East View Information Services9
- Gubarev, Vladimir7
- Medvedev, S. V. (Sergeĭ Vasilʹevich)7
- Murashkevich, Anatoliĭ Mikhaĭlovich7
- Romanov, A. (Aleksandr)6
- Virginskiĭ, V. S. (Viktor Semenovich)6
- Belʹkind, L. D. (Lev Davidovich), 1896-5
- Chernukhin, A. E. (Adolʹf Efimovich)5
- Gorokhov, P. K. (Petr Kuzʹmich)5
- International Civil Aviation Organization5
- Laman, Nikolaĭ Konstantinovich5
- Pokhlebkin, V. V. (Vilʹi︠a︡m Vasilʹevich)5
- Rebrov, Mikhail Fedorovich5
- Belorusskiĭ nat͡s︡ionalʹnyĭ tekhnicheskiĭ universitet4
- Budapesti Műszaki Egyetem4
- Gallaĭ, M. L. (Mark Lazarevich)4
- Indie Photobook Library/Larissa Leclair Collection (Beinecke Rare Book and Manuscript Library)4
- Institut avtomatiki i telemekhaniki (Soviet Union)4