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Sources:
Cunningham, A.B. 1993. Ethics, Ethnobotanical Research, and Biodiversity.
WWF: Gland, Switzerland.
Davis, S.D. et. al. 1986. Plants in Danger: What Do We Know? IUCN: Galnd Switzerland.
WRI. 1992. Global Biodiversity Strategy: Guidelines for Action to Save, Study
and Use Earthís Biotic Wealth Sustainably and
Equitably. WRI, IUCN, UNEP.