Éditions du Dauphin - Jean-Philippe Zahalka, chemist 
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Jean-Philippe Zahalka, chemist

Jean-Philippe Zahalka is Doctor in Chemistery. His books are the result of experiments with Essential Oils spanning over twenty years. Full of information with professional advice and special precautions, the author prepares also his own essential oil formulas for his customers in his pharmacy located in Paris.

Paramahamsa Hariharananda

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