Simmonds, Norman W.,  1914- <br/><br/>
Farming systems research :  a review / 
Norman W. Simmonds. 
 - Washington, D.C. :  World Bank,  c1985. 
 - xii, 97 p. :  ill. 
 - World Bank technical paper ;  no. 43 .
<br/><br/><label>ISBN: </label>0821305662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Research.<br/>Agriculture--Research--On-farm.<br/>Agricultural systems--Tropics.
<br/><br/><label>LC Class. No.: </label>S494.5.S95  / S56 1985 
<br/><br/><label>Dewey Class. No.: </label>630/.72�19