Chan Souk Chanthapadith. (1999) Change of sexual risk behavior of bar girls as related to HIV/AIDS in Vientiane, LAO P.D.R. /. Mahidol University,:ม.ป.ท.Chan Souk Chanthapadith. 1999. Change of sexual risk behavior of bar girls as related to HIV/AIDS in Vientiane, LAO P.D.R. /. ม.ป.ท.:Mahidol University,;Chan Souk Chanthapadith. Change of sexual risk behavior of bar girls as related to HIV/AIDS in Vientiane, LAO P.D.R. /. ม.ป.ท.:Mahidol University, 1999. Print.