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Credit
Working bulletin for the scientific investigation of Cascara sagrada (Rhamnus purshianus) / issued in pursuance of a system of collective investigation of new drugs established and conducted by the Scientific Department of Parke, Davis & Co. ; analytical chemistry under charge of A.B. Lyons, pharmacology under charge of F.E. Stewart, botany H.H. Rusby. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.