Poliński, Władysław (1885–1930)
Tur, Jan (1875–1942)
General Meeting of the Commission on Methods of Economic Regionalization International Geographical Union (1 ; 1961 ; Utrecht)
Seminar of the IGU Study Group on World Political Map (1987 ; Warszawa)
Poliński, Władysław (1885–1930)
Dickstein, Samuel (1851–1939)