Schwab, G. O. <br/><br/>
Soil and water conservation engineering 

 - 4th 
 - New York  John wiley & sos inc  1993 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Agricultural Engineering
<br/><br/><label>Dewey Class. No.: </label>630.22  / SCH