title: [Quantitative determination of stereoisomers of vitamin A on the basis of extinction gradient-method].
mesh_terms: D002845:Chromatography; D008722:Methods; D012822:Silicon Dioxide; D013057:Spectrum Analysis; D013237:Stereoisomerism; D014466:Ultraviolet Rays; D014801:Vitamin A / Q000032:analysis*
chemical_list: D014801:Vitamin A; D012822:Silicon Dioxide
vernacular_title: Quantitative Bestimmung der Stereo-Isomere von Vitamin A auf Grund der Extinktionsgradienten-Methode.