Barnes, J. W. 1921- Ores and minerals : introducing economic geology / J.W. Barnes. - Milton Keynes ; Philadelphia : Open University Press, 1988. - vi, 181 p. : ill., maps ; 25 cm. Includes index. Bibliography: p. [170]-173. ISBN: 0335152163 0335152139 (pbk.) Subjects--Topical Terms: Geology, Economic. LC Class. No.: TN260 / .B27 1988 Dewey Class. No.: 553