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- http://www.liebertpub.com/overview/journal-of-medicinal-food/38/
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MedlinePlus Herbs and Supplements - MedlinePlus Herbs and Supplements
- National Institutes of Health
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Encyclopedia of Herbal Medicine - Encyclopedia of Herbal Medicine
- Andrew Chevallier
- 2000
- Dorling Kindersley Adult
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USDA Plants Database - USDA PLANTS DATABASE
- Natural Resources Conservation Service
- 23 jul 2014
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- United States Department of Agriculture (USDA)
Backyard Medicine - Backyard Medicine
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