Bascom, F.  1862-1945. <br/><br/>
Geology and mineral resources of the Quakertown-Doylestown district, Pennsylvania and New Jersey / 
by F. Bascom ... [et al.] 
 - Washington :  U.S. G.P.O.,  1931. 
 - iv, 62 p. :  ill. (some folded), maps (some col.) ;  24 cm. 
 - Bulletin ;  828 .
 - Geological Survey bulletin ;  828. .
<br/><br/> Col. map on folded leaf in pocket. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>LCCN: </label>gs 31000225  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Pennsylvania.<br/>Geology--New Jersey.<br/>Mines and mineral resources--Pennsylvania.<br/>Mines and mineral resources--New Jersey.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 828