yams

Dwyer, Peter D., and Monica Minnegal. (1990) 1990. “Yams and Megapode Mounds in the Lowland Rain Forest of Papua New Guinea”. Human Ecology 18 (2): 177-85. doi:10.1007/BF00889181.

Johnson, Allen, Raymond B. Hames, and William T. Vickers. (1983) 1983. “Machiguenga Gardens”. In Adaptive Responses of Native Amazonians, 29-63. New York: Academic Press. http://www.worldcat.org/oclc/8827760.

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

Budelman, Arnoud, and Peter M. Zander. (1990) 1990. “Land-Use by Immigrant Baoulé Farmers in the Taï Region, South-West Côte d’Ivoire (Ivory Coast)”. Agroforestry Systems 11 (2): 101-23. doi:10.1007/BF00838724.

Schwimmer, Brian. (1979) 1979. “Market Structure and Social Organization in a Ghanaian Marketing System”. American Ethnologist 6 (4): 682-701. http://www.jstor.org/stable/643564.