RUPPEL, Edward T. <br/><br/>
Geology of the basin quadrangle Jefferson, Lewis and Clark, and Powell counties, Montana / 
by Edward T. Ruppel. 
 -- Washington :   United States Government Printing Office,   1963 
 - 121 p. + map. -- 
 (Geological Survey Bulletin  ; 1151).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>Montana
<br/><br/><label>Universal Decimal Class. No.: </label>55(786)