wheat

Anonymous. (1987) 1987. “IITA: Sustainable Systems”. African Farming, 50-51.

Dazhong, Wen, and David Pimentel. (1986) 1986. “Seventeenth Century Organic Agriculture in China: II. Energy Flows through an Agroecosystem in Jiaxing Region”. Human Ecology 14 (1): 15-28. doi:10.1007/BF00889208.

Sharma, K. K. (1992) 1992. “Wheat Cultivation in Association With Acacia Nilotica (L.) Willd Ex. Del. Field Bund Plantation — a Case Study”. Agroforestry Systems 17 (1): 43-51. doi:10.1007/BF00122926.