Rothrock, E. P.  1889-1977. <br/><br/>
The geology of Grant county, South Dakota, 
by E. P. Rothrock. 
 - Vermillion, S.D.,  University of South Dakota,  1934. 
 - 3 p. l., 40 numb. l. incl. tables.  maps (1 fold.) diagr., profiles.  28 cm. 
 - South Dakota. State Geologist. Report of investigations,  no. 20 .
<br/><br/> At head of title: South Dakota State Geological Survey, E. P. Rothrock, state geologist ...  Folded map laid in.  Reproduced from type-written copy. 
<br/><br/><label>LCCN: </label>gs 34000108  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--South Dakota--Grant County.
<br/><br/><label>LC Class. No.: </label>QE164.G7  / R6 
<br/><br/><label>Dewey Class. No.: </label>557.83