Geologic map of southwestern Pennsylvania. 

 - Harrisburg, Pa.,  W. S. Ray, State Printer,  1914. 
 - 30 p.  10 plates (part col., incl. maps)  24 cm. 
 - Its Report  no. 2 .
 - Pennsylvania.  Topographic and Geologic Survey Commission.  Report  no. 2. .
<br/><br/> At head of title: Topographic and Geologic Survey of Pennsylvania.  Text and plates are in portfolio. 
<br/><br/><label>LCCN: </label>gs 15000427  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>GA61.P4  / A5 no. 2