Phillips, Ronald E. <br/><br/>
No-tillage agriculture  : principles and practices 

 - New York :  Van Nostrand Reinhold,  1984 
 - 306 p.  : ilus. 
<br/><br/><label>LCCN: </label>50125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labranza cero.<br/>Sistemas de cultivo.
<br/><br/><label>Dewey Class. No.: </label>631.51  / P46