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GC-MS spectra of crude Vetiveria zizanioides (vetiver) root ethanol (VRE) extracts and commercial vetiver oil (VO). (A) VRE from greenhouse-grown, 2-mon-old cv. Sierra; (B) VRE from field-grown, 1-yr-old cv. Songkha 3; (C) VRE from greenhouse-grown, 4-yr-old cv. Sierra; (D) commercial VO from Haiti.
