title: Chromatography of natural substances: an introduction.
authors: Leslie S
authors: LS
authors: Ettre
mesh_terms: D000596:Amino Acids / Q000032:analysis; D001685:Biological Factors / Q000032:analysis*; D001688:Biological Products / Q000032:analysis*; D002845:Chromatography; D004365:Drugs, Chinese Herbal / Q000032:analysis; D009822:Oils, Volatile / Q000032:analysis; D010578:Petroleum; D010860:Pigments, Biological / Q000032:analysis
chemical_list: D000596:Amino Acids; D001685:Biological Factors; D001688:Biological Products; D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D010578:Petroleum; D010860:Pigments, Biological