1. Alcorn JB (1981) Huastec non crop resource management: implications for prehistoric rain forest management. Hum Ecol 9:395–417
2. Alcorn JB (1989) Process as resource: the traditional agricultural ideology of Bora and Huastec resource management and its implications for research. Adv Econ Bot 7:63–76
3. Anderson AB, Posey DA (1989) Management of a tropical scrub savanna by the Gorotire Kayapo Brazil. Adv Econ Bot 7:159–173
4. Arellano E, Casas A (2003) Morphological variation of Escontria chiotilla (Cactaceae) under silvicultural management in the Tehuacán valley, central Mexico. Genet Resour Crop Evol 50:439–453
5. Arnold JE, Ruíz-Perez M (1998) The role of non-timber forest products in conservation and development. In: Wollenberg E, Ingles A (eds) Incomes from forest methods for the development and conservation of forest products for local communities. Centre for International Forestry Research (CIFOR), Bogor, pp 17–42