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Bibliothèque technique des brevets de l'U.R.S.S.
ВПТБ
(СССР)
Bibliothèque technique des brevets de l'U.R.S.S.
Всесоюзная патентно-техническая библиотека
Comité d'Etat du Conseil des Ministres de l'U.R.S.S. pour la science et la technique
Государственный комитет Совета Министров СССР по науке и технике
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