Le Conte, John Lawrence,  1825-1883. <br/><br/>
Notes on the geology of the survey for the extension of the Union Pacific railway, E. D.,  from the Smoky Hill river, Kansas, to the Rio Grande. 
By John L. Le Conte ... 
 - Philadelphia  [Review printing house]  1868. 
 - 76 p.  front. (fold. map) diagrs.  23 cm. 
<br/><br/> "Catalogue of rocks, by Dr. F. A. Genth": p. 69-76. 
<br/><br/><label>LCCN: </label>gs 06000451  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--West (U.S.)
<br/><br/><label>LC Class. No.: </label>QE79  / .L3