1. AFT (American Farmland Trust). 1988. Eroding choices emerging issues: the condition of California's agricultural land resources. Executive summary. AFT, California Field Office, San Francisco.
2. Agriculture Canada. 1985. Agricultural soil and water resources in Canada: situation and outlook. Regional Development Branch, Ottawa, Ontario.
3. Alauddin, M., and C. Tisdell. 1987. Trends and projections for Bangladeshi food production: an alternative viewpoint.Food Policy 11(2):318–331.
4. Altieri, M. 1987. Agroecology: the scientific basis for alternative agriculture. Westview Press, Boulder, Colorado.
5. Ashmead, R. 1985. Economic structure and capital requirements for agriculture.Canadian Journal of Agricultural Economics 32:24–37.