Edgertgon, Curtis D. <br/><br/>
The mine map repository :  a source of mine data / 
by Curtis D. Edgerton. 
 - [Washington] :  U.S. Dept. of the Interior, Bureau of Mines,  [1974]. 
 - 9 p. 
 - Information circular ;  no. 8657 .
 - United States.  Bureau of Mines.  Information circular ;  no. 8657 .
 - Information circular (United States. Bureau of Mines) ;  no. 8657 .
<br/><br/><label>LCCN: </label>91055146     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine maps.