The Mineral Position of the United States, 1975-2000 :  proceedings of a symposium, Minneapolis, Minn., 15.11.1972., held at the (Joint) Annual Meeting of the Geological Society of America and Associated Societes 
Hrsg.: E. N. Cameron. Society of Econ omic Geologists. 
 - London  The Univ. of Wisc. Pr  1973.  
 - XVII, 159 S. 
<br/><br/><label>ISBN: </label>0299063003 (cloth) 0299063046 (paper) 9780299063009 (cloth) 9780299063047 (paper)