Khan, Z M [Notes concerning the isolation of quaternary alkaloids from Pleiocarpa tubicina Stapf]. [electronic resource] - Helvetica chimica acta Mar 1967 - 625-7 p. digital Publication Type: Journal Article ISSN: 0018-019X Standard No.: 10.1002/hlca.19670500228 doi Subjects--Topical Terms: Alkaloids--analysisPlant Extracts--analysisPlants--analysis