Oschwald, W. R. <br/><br/>
Crop residue management systems ; proceedings of a symposium... 

 - Madison, Wis. :  American Society of Agronomy,  1978 
 - 248 p.  ; gráfs. 
 - Special publication  ; 31 .
 - Special publication  ; 31 .
<br/><br/><label>LCCN: </label>37107 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abonos.<br/>Erosión.<br/>Suelos--Conservación.
<br/><br/><label>Dewey Class. No.: </label>631.45  / O8