title: Direct densitometric determination of tetracycline in pharmaceutical preparations.
mesh_terms: D002626:Chemistry, Pharmaceutical; D002855:Chromatography, Thin Layer; D003720:Densitometry; D004304:Dosage Forms; D008722:Methods; D013053:Spectrophotometry; D013752:Tetracycline / Q000032:analysis*
chemical_list: D004304:Dosage Forms; D013752:Tetracycline