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International Cartographic Association / Commission II (9)
International Cartographic Conference (8. : 1976 : Moskau) (1976-)(2)
International Conference on Cartography (7, 1974, Madrid) (1974/1974-1974)(2)
International Conference on Cartography (5, 1970, Stresa)(1)
Leibniz-Institut für Länderkunde (9)