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Akademie der Wissenschaften der DDR (1972-1990)(1)
Akademie-Verlag (Berlin, Ost) (1946-)(1)
Deutsches Institut für Länderkunde (1942-)(1)
International Council of Scientific Unions / Scientific Committee on Problems of the Environment / National Committee of the German Demokratic Republic(1)
International Geographical Congress (19. : 1960 : Stockholm) (1960-)(1)