• Science: Biology: Botany: Ethnobotany  (37)

• União do Vegetal - Personal account of a Unaio do Vegetal service from a book about spiritual uses of psychoactives by Nicholas Saunders
• Web of Possibilities - Contains historical information and other resources on the use of hallucinogens for spiritual awakening and growth. Includes bibliographies on the use of hallucinogens in shamanic religions.

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