SCHMIDT, Robert Gordon <br/><br/>
Geology and ore deposits of the Cuyuna north range Minnesota / 
by Robert Gordon Schmidt. 
 -- Washington :   United States Government Printing Office,   1963 
 - 96 p. + map. -- 
 (Geological Survey Professional Paper  ; 407).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Depósitos de minerales<br/>Geología<br/>Minnesota
<br/><br/><label>Universal Decimal Class. No.: </label>553(776)