Troeh, Frederick R. <br/><br/>
Soil and water conservation for productivity and environmental protection / 
Frederick R. Troeh, J. Arthur Hobbs, Roy L. Donahue ; editorial assistance [by] Miriam R. Troeh 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1980 
 - xv, 718 p. :  ill. ;  24 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0138221553 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation<br/>Water conservation<br/>Soil erosion