National Science Teachers Association. (1982). Guidebook on the proper use of medicinal plants. National Science and Technology Authority.
Citace podle Chicago (17th ed.)National Science Teachers Association. Guidebook on the Proper Use of Medicinal Plants. Metro Manila: National Science and Technology Authority, 1982.
Citace podle MLA (9th ed.)National Science Teachers Association. Guidebook on the Proper Use of Medicinal Plants. National Science and Technology Authority, 1982.
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