Cross, Whitman,  1854-1949. <br/><br/>
A brief review of the geology of the San Juan region of southwestern Colorado, 
by Whitman Cross and Esper S. Larsen. 
 - Washington,  U.S. Govt. print. off.,  1935. 
 - vi, 138 p.  16 pl. (part fold. incl. maps (2 in pocket) diagrs.  23 cm. 
 - U.S.  Geological survey.  Bulletin  no. 843 .
<br/><br/> "Literature": p. 4-6. 
<br/><br/><label>LCCN: </label>gs 35000277  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Colorado--San Juan Region.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 843