Knappen, Russell Stafford,  1892- <br/><br/>
Geology and mineral resources of the Dixon quadrangle, 
by Russell Stafford Knappen. 
 - Urbana, Ill.  [Schnepp & Barnes, printers, Springfield]  1926. 
 - 141 p. incl. illus., tables.  V pl. (fold. maps, part col.)  26 cm. 
 - Illinois. State geological survey. Bulletin  no. 49 .
 - Bulletin (Illinois State Geological Survey) ;  no. 49. .
<br/><br/> At head of title: State of Illinois. Department of registration and education. Division of the State geological survey.  Published also as thesis (Ph. D.) Columbia university, 1927.  Plates I-II folded in pocket. 
<br/><br/>Bibliographical references. 
<br/><br/><label>LCCN: </label>gs 27000129  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Illinois--Lee County.<br/>Geology--Illinois--Ogle County.<br/>Mines and mineral resources--Illinois--Lee County.<br/>Mines and mineral resources--Illinois--Ogle County.
<br/><br/><label>LC Class. No.: </label>QE105  / .A16 no. 49