Simpson, Howard Edwin,  1917- <br/><br/>
Geology of the Yankton area, South Dakota and Nebraska. 

 - Washington,  U.S. Govt. Print. Off.,  1960. 
 - 124 p.  illus., maps (part fold., part col.) diagrs., profile, tables.  29 cm. 
<br/><br/> Part of illustrative matter in pocket.  Prepared as part of the program of the Dept. of the Interior for the development of the Missouri River Basin. 
<br/><br/>Bibliography: p. 118-121. 
<br/><br/><label>LCCN: </label>gs 61000181  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--South Dakota<br/>Geology--Nebraska
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 328 
<br/><br/><label>Dewey Class. No.: </label>557.82 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:328