Claassen, S. L. <br/><br/>
Mechanized minimum and no-till crop production for research farms 
S. L. Claassen / IITA 
 - Ibadan  IITA  1992 
 - 16p. : ill. ;  Pbk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops - --Research--Production -
<br/><br/><label>LC Class. No.: </label>S604 .C6 1992