CHRISTENSEN, B V A new spectrophotometric method of assay for Alexandria senna leaves (Cassia acutifolia-Delile). [electronic resource] - Journal of the American Pharmaceutical Association. American Pharmaceutical Association Nov 1949 - 589-93 p. digital Publication Type: Journal Article Standard No.: 10.1002/jps.3030381106 doi Subjects--Topical Terms: CassiaHumansSenna PlantSpectrophotometrySpectrum Analysis