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, Miriam R. Troeh. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1980. 
 - 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.
<br/><br/><label>LC Class. No.: </label>S623  / T76 1980