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DJVU PDF Vadhana Subhavan, Somsak Pramankij, Sasiphan Na Songkhla, Chanchai Asvavinijkulchai, Surapong Pimjun and Somporn Chongkum. 1998, "Discoveries in Thailand tracing Asian ancestry", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 411-420. Institute of Language and Culture for Rural Development, Mahidol University. cite.