BIGGS, A I The spectrophotometric detection of Cannabis sativa resin. [electronic resource] - The Journal of pharmacy and pharmacology Jan 1953 - 18-25 p. digital Publication Type: Journal Article ISSN: 0022-3573 Standard No.: 10.1111/j.2042-7158.1953.tb13950.x doi Subjects--Topical Terms: Cannabis--analysisSpectrophotometry