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Land utilization : methods and problems of research : proceedings of the International Seminar, Poland, 30.V-8.VI.1960 / [aut. Jerzy Kostrowicki i in.]. +13 map. Warszawa : Państw.Wydaw.Nauk., 1962.
Problems of geomorphological mapping : the international conference of the Subcommission on Geomorphological Mapping, Poland, 3-12 May, 1962 / [aut. Jan Pieter Bakker]. +4 zał. Warszawa : Państw.Wydaw.Nauk., 1963.
The concise dictionary of 26 languages in simultaneous translation / compiled by Peter M. Bergman. New York ; Signet Reference Book, 1968.