Ruhe, Robert V.,  1918- <br/><br/>
Landscape evolution and soil formation in southwestern Iowa / 
Robert V. Ruhe, Raymond B. Daniels, and John G. Cady. 
 - Washington :  U.S. Dept. of Agriculture,  1967. 
 - 242 p. :  ill., maps ;  23 cm. 
 - Technical bulletin (United States. Department of Agriculture) ;  no. 1349. .
<br/><br/>Bibliography: p. 225-231. 
<br/><br/><label>LCCN: </label>agr67000325  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil formation--Iowa.<br/>Geomorphology--Iowa.<br/>Soils--Iowa.
<br/><br/><label>LC Class. No.: </label>S21  / .A72 no. 1349 
<br/><br/><label>Dewey Class. No.: </label>631.4/7/7777 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84Te no.1349