Troch, Fredrick R. <br/><br/>
Soil and water conservation   
by Fredrick R. Troch, J. Arthur Hobbs, Roy L. Donahue. 
 - Englewood Cliffs  Prentice-Hall  1991 
 - xiii,530p. 
<br/><br/><label>ISBN: </label>013830324X 
<br/><br/><label>Dewey Class. No.: </label>333.7316  / N91