Development of farming systems :  evaluation of the five-year period 1980-1984 / 
J.C. Zadoks, Editor. 
 - Wageningen, The Netherlands :  Pudoc, Centre for Agricultural Publishing and Documentation,  1989. 
 - 90 p. :  ill. 
<br/><br/><label>ISBN: </label> 9022009696 (pbk.) 
<br/><br/><label>LCCN: </label>90053174     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Research.