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Essential Oils: Contact Allergy and Chemical Composition by Erich Schmidt, Anton C. de Groot (Hardcover, 2016)
Price:
AU $330.09
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30-day returns. Buyer pays for return postage.
Condition:
By Erich Schmidt, Anton C. de Groot. He eventually established an analytical laboratory and as the use of aromatherapy grew in Germany, he provided information about risks, safety evaluation, and genuineness of essential oils.