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Institut für Geographie und Geoökologie (1976-1991) (4)
International Cartographic Association (1959-)(1)
International Council of Scientific Unions / Scientific Committee on Problems of the Environment / National Committee of the German Demokratic Republic(1)
International Council of Scientific Unions. Scientific Committee on Problems of the Environment (1969-1998)(1)
International Geographical Union / Commission on National and Regional Atlases(1)