Hanley, John B.  1913- <br/><br/>
Pegmatite investigations in Colorado, Wyoming and Utah 1942-1944, 
by John B. Hanley, E. Wm. Heinrich and Lincoln R. Page; a report on resources of beryllium, tantalum and lithium minerals, and of muscovite. 
 - Washington,  U.S. Govt. Print. Off.,  1950. 
 - vi, 125 p.  plates, maps (part fold. in pocket) diagrs.  29 cm. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 50000063  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pegmatites.<br/>Mines and mineral resources--Colorado.<br/>Mines and mineral resources--Wyoming.<br/>Mines and mineral resources--Utah.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 227 
<br/><br/><label>Dewey Class. No.: </label>552.1