Lovering, T. S.  1896-1991. <br/><br/>
Geology and ore deposits of the Boulder County tungsten district, Colorado, 
by T. S. Lovering and Ogden Tweto. [Prepared in cooperation with the State of Colorado through the Colorado Geological Survey board and the Colorado Metal Mining Fund] 
 - Washington,  U.S. Govt. Print. Off.,  1953. 
 - viii, 199 p.  illus., maps, diagrs., plans, tables.  29 cm. 
<br/><br/> Part of the illustrative material is folded, part colored, part in pocket. 
<br/><br/>"List of references": p. 192-196. 
<br/><br/><label>LCCN: </label>gs 54000292  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Colorado--Boulder County<br/>Petrology--Colorado--Boulder County<br/>Tungsten ores--Colorado--Boulder County<br/>Tungsten mines and mining--Colorado--Boulder County
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 245 
<br/><br/><label>Dewey Class. No.: </label>553.46 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:245