Schwan, G. O...[et al.] <br/><br/>
Soil and water conservation engineering. 
G. O...[et al Schwan 
 - 2nd 
 - New York   John Wiley & Sons  1981 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil Conservations
<br/><br/><label>LC Class. No.: </label>S 623 .S6 1966