Butts, Charles,  1863-1946. <br/><br/>
Geology and mineral resources of the Bellefonte quadrangle, Pennsylvania, 
by Charles Butts and Elwood S. Moore. 
 - Washington,  U.S. Govt. Print. Off.,  1936. 
 - vi, 111 p.  incl. maps, tables. 12 pl. (incl. fold. col. map, fold. col. profile, fold. diagr.; in pocket) on 8 l.  23 cm. 
<br/><br/> At head of title: United States Department of the Interior. 
<br/><br/>Bibliographical foot-notes. 
<br/><br/><label>LCCN: </label>gs 36000084  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Pennsylvania--Centre County.<br/>Mines and mineral resources--Pennsylvania--Centre County.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 855