United States Department of Agriculture <br/><br/>
Manual on conservation of soil and water 

 - Calcutta  United States Department of Agriculture  1964 
 - 208p 
<br/><br/>United States Department of Agriculture: Manual on conservation of soil and water.  Calcutta.  United States Department of Agriculture, 1964.--(631.45UNI)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.45  / USDA