Troeh , Frederick R. <br/><br/>
Soil and water conservation / 
Frederick R. Troeh , J. Arthur Hobbs , Roy L. Donahue 
 - 2nd ed. 
 - Englewood Cliffs, NJ. :  Prentice Hall ,  1991 
 - xiii , 530 p. :  ill. ;  24 cm . 
<br/><br/> Rev.ed.of : Soil and water conservation for productivity and environmental protection 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>013830324x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation<br/>Water conservation<br/>Agricultural engineering