Stoll, Walter Clericus,  1915- <br/><br/>
Mica and beryl pegmatites in Idaho and Montana.  A description of mines and prospects examined in each district, some illustrated by maps and structure sections. 

 - Washington,  U.S. Govt. Print. Off.,  1950. 
 - v, 64 p.  illus., maps (8 fold. in pocket)  29 cm. 
 - Geological Survey professional paper 229 .
 - Geological Survey (U.S.).  Professional paper ;  229. .
<br/><br/><label>LCCN: </label>gs 51000100  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mica<br/>Beryl<br/>Pegmatites
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 229 
<br/><br/><label>Dewey Class. No.: </label>553.9