A course of mineralogy / A. Betekhtin ; translated from the Russian by V. Agol. Translation editor: A Gurevich. Kurs mineralogii. English Betekhtin, A. G. (Anatoliĭ Georgievich) Mineralogy. QE363 .B3713 549 BEC Added t.p. in Russian. Translation of Kurs mineralogii (romanized form) Includes bibliographical references and index. Moscow : Peace Publishers, [1964] [1964] 1964 Text 642 p. : eng engrus