Science
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 - 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 - Photographs of varying stages in the growth of this perennial plant with its description and identifying characteristics...
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Plant Cultures: Hemp - A profile of Cannabis sativa, with information on its history, production and trade, medicinal and other uses. ..
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Plant Profile for Cannabis sativa - Information from the USDA Plants database. ..
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