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Flora of North America: Cannabis sativa

Flora of North America: Cannabis sativa - Includes a description and a history of this plant in cultivation. ..

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Hemp: A New Crop with New Uses for North America

Hemp: A New Crop with New Uses for North America - By Ernest Small and David Marcus. Reprinted from: Trends in new crops and new uses. 2002. p. 284–..

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Marijuana: Cannabis sativa

Marijuana: Cannabis sativa - Photographs of varying stages in the growth of this perennial plant with its description and identifying characteristics...