Phalen, William Clifton,  1877-1949. <br/><br/>
Mineral resources of Johnstown, Pennsylvania and vicinity / 
by W.C. Phalen and Lawrence Martin; surveyed in cooperation with the Topographic and Geologic Survey of Pennsylvania. 
 - Washington :  Government Printing Office,  1911. 
 - 142 p :  ill., 7 plates (incl. 2 fold. maps) ;  23 cm. 
 - United States.  Geological Survey.  Bulletin ;  447 .
 - Geological Survey bulletin ;  447. .
<br/><br/><label>LCCN: </label>gs 11000155  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--Pennsylvania.<br/>Coal mines and mining--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>TN24.P4  / P6