Problems of economic region : papers of the Conference on Economic Regionalization in Kazimierz (Poland), may 29 - June 1, 1959. - Warszawa, 1961.

Conference on Economic Regions : Kazimierz, may 29 - june 1, 1959 : followed by scientific excursion, june 1-6, 1959 / Polish Academy of Sciences. Institute of Geography. Bibliographical and Information Center of Geographical Studies on Economic Regions. - [Warszawa, 1959]. Na s. 3: (Conference: Studies on Economic Regionalization of the Socialist Countries)

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