title: Gas-liquid chromatographic determination of vitamins D 2  and D 3  in infant formulas and feeding preparations.
mesh_terms: D002762:Cholecalciferol / Q000032:analysis*; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D004872:Ergocalciferols / Q000032:analysis*; D005504:Food Analysis; D007225:Infant Food / Q000032:analysis; D007227:Infant Nutritional Physiological Phenomena; D008722:Methods; D013261:Sterols / Q000302:isolation & purification
chemical_list: D004872:Ergocalciferols; D013261:Sterols; D002762:Cholecalciferol