Farming systems research / 
United Nations Environment Programme. 
 - [Nairobi] :  United Nations Environment Programme,  1986. 
 - x, 10 p. 
 - UNEP environmental management guidelines ;  no. 12 .
<br/><br/> Cover title: Environmental guidelines for farming systems research 
<br/><br/><label>LCCN: </label>89080253     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Research.<br/>Environmental policy.<br/>Conservation of natural resources.