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25 years of Bulgaria's Cooperation in the Council for Mutual Economic Assitance [this book is dedicated to the 28th Session of the Council for Mutual Economic Assistance, Sofia, 1974
Título 25 years of Bulgaria's Cooperation in the Council for Mutual Economic Assitance ;editor in chief, N. Ibrishimov] ;
Lugar de publicación [Sofia
Editorial Sofia Press
Fecha de publicación 1974]