Robinson, G. D.  1918- <br/><br/>
Geology of the Three Forks quadrangle, Montana. 
With sections on petrography of igneous rocks, by H. Frank Barnett. 
 - Washington,  U.S. Govt. Print. Off.,  1963. 
 - 143 p.  illus., maps (2 col.) diagrs., tables.  29 cm. 
<br/><br/> 4 pieces of illustrative matter fold. in pocket. 
<br/><br/>Bibliography: p. 135-140. 
<br/><br/><label>LCCN: </label>gs 63000240  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Montana--Three Forks quadrangle<br/>Petrology--Montana--Three Forks quadrangle
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 370 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:370