title: Application of contour maps to three-dimensional display of ultraviolet absorbance in high-performance liquid chromatography of natural drug materials.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002929:Cinchona / Q000032:analysis; D006035:Glycyrrhiza / Q000032:analysis; D004364:Pharmaceutical Preparations / Q000032:analysis*; D010946:Plants, Medicinal; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004364:Pharmaceutical Preparations