Simmonds, Norman W. <br/><br/>
Farming systems research: A review 
by Norman W. Simmonds 
 - Washington, D.C.  IBRD  1985 
 - 97p. 
 - World Bank Technical Paper, 43 .
<br/><br/><label>ISBN: </label>0821305662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems --Tropics<br/>Agriculture --Research --On-farm<br/>Agricultural systems --Research
<br/><br/><label>Dewey Class. No.: </label>Z In8f