General Meeting of the Commission on Methods of Economic Regionalization International Geographical Union (1 ; 1961 ; Utrecht)
Belke, Gustaw (1810–1873)
Putzger, Friedrich Wilhelm (1849–1913) Pehle, Max (1881–1939) Silberborth, Hans (1887–1949)
Baraniecki, Marian Aleksander (1848–1895)
Korcelli, Piotr (1939– ) Kozubek, Elżbieta Barbara Werner, Piotr (1956– )