Geology of tungsten / edited by Alexei A. Beus. - Paris : Unesco, c 1986. - 280 p. ; ill. ; 27 cm. - Earth sciences, 18. . 331 331 ISBN: 92-3-102195-8 Subjects--Topical Terms: Tungsten. Geochemistry. Dewey Class. No.: 553.49 / U3g