Masarat Pariyanonth. (1991) The study of opioid receptors in bovine pineal gland. Mahidol University,:ม.ป.ท.Masarat Pariyanonth. 1991. The study of opioid receptors in bovine pineal gland. ม.ป.ท.:Mahidol University,;Masarat Pariyanonth. The study of opioid receptors in bovine pineal gland. ม.ป.ท.:Mahidol University, 1991. Print.