Koschmann, Albert Herbert,  1896-1962. <br/><br/>
Principal gold-producing districts of the United States, 
by A. H. Koschmann and M. H. Bergendahl. 
 - Washington,  U.S. Dept. of the Interior,  1968. 
 - v, 283 p.  illus., maps.  30 cm. 
 - Geological Survey professional paper 610 .
 - Geological Survey professional paper ;  610. .
<br/><br/>Bibliography: p. 263-276. 
<br/><br/><label>LCCN: </label>gs 68000342 //r882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold mines and mining--United States.<br/>Gold ores--United States.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 610 
<br/><br/><label>Dewey Class. No.: </label>553/.41/0973