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Rajasekaran, B., and D. Michael Warren. (1994) 1994. “IK for Socioeconomic Development and Biodiversity Conservation: The Kolli Hills”. Indigenous Knowledge and Development Monitor 2 (2): 13-17. http://www.ciesin.org/kiosk/ebs/Newsletter/IKNEWS/5art5.txt.

Rajasekaran, B., and D. Michael Warren. (1994) 1994. “Using Indigenous Knowledge As a Tool for Socioeconomic Development and Biodiversity Conservation in the Hilly Regions of India: The Case of Kolli Hills.”

Erickson, Clark L. (1986) 1986. “Agricultura En Camellones En La Cuena Del Lago Titicaca: Aspectos Tecnicos Y Su Futuro”. In Andenes Y Camellones En El Peru Andino: Historia Presente Y Futuro, 331-50. Lima, Peru: Consejo Nacional de Ciencia y Techologia, Oficina de Politica Cientifica y Technologica.