title: THE APPLICATION OF THIN-LAYER CHROMATOGRAPHIC AND SPECTRAL PROCEDURES TO THE ANALYSIS OF AZA HETEROCYCLIC HYDROCARBONS IN COMPLEX MIXTURES.
mesh_terms: D000397:Air Pollution; D002273:Carcinogens; D002845:Chromatography; D002855:Chromatography, Thin Layer; D003033:Coal Tar; D006571:Heterocyclic Compounds; D006838:Hydrocarbons; D013053:Spectrophotometry
chemical_list: D002273:Carcinogens; D006571:Heterocyclic Compounds; D006838:Hydrocarbons; D003033:Coal Tar
keywords: AIR POLLUTION; CARCINOGENS; CHROMATOGRAPHY; COAL TAR; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; SPECTROPHOTOMETRY