Genth, F. A.  1820-1893. <br/><br/>
Preliminary report on the mineralogy of Pennsylvania, 
by F. A. Genth.  With an appendix on the hydrocarbon compounds, by Samuel P. Sadtler. 
 - Harrisburg,  Pub. by the Board of commissioners for the Second Geological survey,  1875. 
 - 2 p.l., B v, 206 B p.  front. map.  23 cm. 
 - Pennsylvania. Geological survey, 2d. [Report of progress B] .
 - Report of progress (Geological Survey of Pennsylvania),  B. .
<br/><br/> At head of title: Second geological survey of Pennsylvania, 1874. 
<br/><br/><label>LCCN: </label>gs 07000700  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>QE157  / .A16 vol. B