Craig, I. A. (1987). Pre-rice-crop green manuring: A technology for soil improvement under rainfed conditions in Northeast Thailand. Northeast Rainfed Agricultural Development (NERAD) Project, Northeast Regional Office of Agriculture.
Cita Chicago (17th ed.)Craig, Iain A. Pre-rice-crop Green Manuring: A Technology for Soil Improvement Under Rainfed Conditions in Northeast Thailand. Khon Kaen, Thailand: Northeast Rainfed Agricultural Development (NERAD) Project, Northeast Regional Office of Agriculture, 1987.
Cita MLA (9th ed.)Craig, Iain A. Pre-rice-crop Green Manuring: A Technology for Soil Improvement Under Rainfed Conditions in Northeast Thailand. Northeast Rainfed Agricultural Development (NERAD) Project, Northeast Regional Office of Agriculture, 1987.