@PROCEEDINGS {TER KUILE: 1983a, title = {Guidlines for farming systems to prevent soil degradation in the humid and subhumid tropics}, author = {ter Kuile, C. H. H. and Kang, B. }, booktitle = {Paper presented at theUNDP expert Meeting on Guildlines for the role of farming Systems in Preventing Soil degradation}, year = {1983}, note = {20-24 June,ICRISAT, Hyderabad, India}, }