UNITED states department of agriculture <br/><br/>
A manual on conservation of soil and water 

 - New Delhi  Oxford & IBH publishing Co.  1974 
 - iv, 208 p. 
<br/><br/><label>ISBN: </label>74923 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils
<br/><br/><label>Dewey Class. No.: </label>631.45  / UNI