Chutima Kaewsilpa. (1982) Adescription of Pho Karen : a in Thailand. Mahidol University,:ม.ป.ท.Chutima Kaewsilpa. 1982. Adescription of Pho Karen : a in Thailand. ม.ป.ท.:Mahidol University,;Chutima Kaewsilpa. Adescription of Pho Karen : a in Thailand. ม.ป.ท.:Mahidol University, 1982. Print.