Chuleegone Sornsuvit. (1995) Serum betacarotene in normal Thais after ingestion of betacarotene capsule and betacarotene-rich food. Mahidol University,:ม.ป.ท.Chuleegone Sornsuvit. 1995. Serum betacarotene in normal Thais after ingestion of betacarotene capsule and betacarotene-rich food. ม.ป.ท.:Mahidol University,;Chuleegone Sornsuvit. Serum betacarotene in normal Thais after ingestion of betacarotene capsule and betacarotene-rich food. ม.ป.ท.:Mahidol University, 1995. Print.