SOBEL, A E Physiological availability of vitamin A from capsules. [electronic resource] - A.M.A. American journal of diseases of children Nov 1952 - 609-15 p. digital Publication Type: Journal Article ISSN: 2374-2941 Standard No.: 10.1001/archpedi.1952.02050050083005 doi Subjects--Topical Terms: Biological AvailabilityCapsulesHumansVitamin A--administration & dosage