Troeh, Fredrick R. <br/><br/>
Soil and water conservation / 
J Arthur Hobbs. 
 - New Jersey :  Prentice-Hall,  c1980. 
 - 718 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation.<br/>Water conservation.
<br/><br/><label>LC Class. No.: </label>S623  / .T76