@ARTICLE {TER KUILE: 1983, title = {Guidelines for farming systems to prevent soil degradation in the humid and subhumid tropics}, author = {ter Kuile, C. H. H. and Kang, B. }, journal = {Paper presented at the UNDP Expert meeting on Guidlines for the Role of Farming System in Preventing Soil Degradation}, year = {1983}, pages = {20--24}, }