title: [A derivatographic study of tetracycline hydrochloride with different concentrations of contaminants].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002850:Chromatography, Gel; D002854:Chromatography, Paper; D006358:Hot Temperature; D013053:Spectrophotometry; D013752:Tetracycline; D013754:Tetracyclines
chemical_list: D013754:Tetracyclines; D013752:Tetracycline
vernacular_title: Issledovanie metodom derivatografii solianokislogo tetratsiklina s raznym soderzhaniem primeseĭ