Pre-rice-crop green manuring a technology for soil improvement under rainfed conditions in Northeast Thailand - Craig, Iain A. (Khon Kaen, Thailand Northeast Rainfed Agricultural Development (NERAD) Project, Northeast Regional Office of Agriculture, 1987)
NERADICS/PCE-4004-0530.
Cover title.
Includes bibliographical references (leaf 8)
Keywords: Soil fertility -- Thailand, Northeastern; Fertilizers; Soil productivity -- Thailand, Northeastern