Agnew, Allen F.,  1918-2012. <br/><br/>
A Guide to the stratigraphy of South Dakota / 
by Allen F. Agnew and Paul C. Tychsen. 
 - Vermillion, S.D. :  Science Center, University of South Dakota,  1965. 
 - 195 p. :  maps ;  28 cm. 
 - Bulletin / South Dakota Geological Survey ;  14. .
 - Bulletin (South Dakota Geological Survey) ;  14. .
<br/><br/><label>LCCN: </label>gs 65000329  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--South Dakota.
<br/><br/><label>LC Class. No.: </label>QE163  / .A3 no. 14