Physical geology [by] G. Gorshkov [and] A. Yakushova. Translated from the Russian by A. Gurevich. Obshchai︠a︡ geologii︠a︡. English Gorshkov, Georgiĭ Petrovich. I︠A︡kushova, Aleksandra Fedorovna. Physical geology. QE33 .G6713 551 GOP Translation of Obshchai︠a︡ geologii︠a︡. "Revised from the 1962 Russian edition." Moscow, Mir Publishers, 1967. 1967. 1967 Text 596 p. eng engrus