1. Hydrastis and its preparations Publication: [Cincinnati? : Wm. S. Merrell Company?, ca. 1896] Subject(s): Plant Preparations -- therapeutic useHydrastisPhytotherapy
2. Essence of spruce Author(s): Robert Bach & Co. (Firm). Publication: [New York : s.n., ca. 1804] Subject(s): Scurvy -- diet therapyPiceaPhytotherapyPlant Preparations -- therapeutic use
