Calkins, Frank C. <br/><br/>
A geological reconnaissance in northern Idaho and northwestern Montana / 
by F.C. Calkins. With notes on the economic geology, by D.F. MacDonald. 
 - Washington,  Govt. Print. Off.,  1909. 
 - 112 p. :  ill., fold. map ;  24 cm. 
 - U.S. Geological survey. Bulletin 384 .
 - United States.  Geological Survey.  Bulletin ;  384. .
<br/><br/> Includes index. 
<br/><br/><label>LCCN: </label>gs 09000249  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Idaho.<br/>Geology--Montana.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 384