Troeh Frederick R <br/><br/>
Soil and water conservation for productivity and e 

 - Eaglewood  Prentice Hall           1980 
 - xvi, 718p  cm. 
<br/><br/><label>ISBN: </label>0138221553 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:1:7, M0