Nipa Krisawekwisai. 2003. Sexual behavior among M.S. 3 students in Ubonratchathani province. Field of Study Human Reproduction and Population Planning, Mahidol University;
Nipa Krisawekwisai. (2003) Sexual behavior among M.S. 3 students in Ubonratchathani province . Mahidol University/Bangkok.
Nipa Krisawekwisai. Sexual behavior among M.S. 3 students in Ubonratchathani province. . Bangkok:Mahidol University, 2003.
Nipa Krisawekwisai. (2003) Sexual behavior among M.S. 3 students in Ubonratchathani province . Mahidol University/Bangkok.