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Scientific and Technical Collaboration
Soviet-Bulgarian Scientific Collaboration
Working Meeting
Office memo
Office memo
Date: 22.04.1982
Original document language: russian
Authors: Andrei Petrovich Ershov
Organizations: Sib. Branch of the USSR Ac. Sci., CC SB RAS
Persons: Dimitr Vakarelov
Addressee: Valentin A. Koptyug

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