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- | Sweet birch bark essential oil (fresh bark 0.29-0.39%; air-dried bark 0.6%; commercial from chopped young trees 0.23%) consists chiefly of methyl salicylate. \\ | + | Sweet birch bark essential oil (fresh bark 0.29-0.39%; air-dried bark 0.6%; commercial from chopped young trees 0.23%) consists chiefly of methyl salicylate |
[Power, B., Kleber, C., „Oil of wintergreen and oil of sweet birch.“ Pharm. Rundsch, New York, october (1895); also in: Fritzsche Brothers, Circulars of information No.7, 1894] | [Power, B., Kleber, C., „Oil of wintergreen and oil of sweet birch.“ Pharm. Rundsch, New York, october (1895); also in: Fritzsche Brothers, Circulars of information No.7, 1894] | ||
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Betula lenta L., Köhler, F.E., Medizinal Pflanzen, vol.3 t.69 (1890) \\ | Betula lenta L., Köhler, F.E., Medizinal Pflanzen, vol.3 t.69 (1890) \\ | ||
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