Heikes, V. C. <br/><br/>
Gold, silver, copper, lead and zinc in Montana in 1913 :   Mines report. 

 - Washington, D.C.  Government Printing Office  1914 
 - pp. 583-620 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA