Farming systems principles for improved food production and the control of soil degradation in the arid, semi-arid, and humid tropics :  summary of proceedings of an experts' meeting sponsored by the United Nations Environment Programme, 20-30 June 1983, ICRISAT Center, India. 

 - Patancheru :  International Crops Research Institute for the Semi-Arid Tropics for UNEP,  1986. 
 - vii, 36 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Tropics.<br/>Soil conservation--Tropics.