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An excerpt from The new book, Atlas of Perfumed Botan
y (MIT Press( by perfumer Jean-Claude Ellena
https://thereader.mitpress.mit.edu/a-master-perfumers-reflections-on-patchouli-and-vetiver/
https://thereader.mitpress.mit.edu/a-master-perfumers-reflections-on-patchouli-and-vetiver/