Sengphouvanh Ngonephady. 1999. Prevalence of oral diseases in Savannakhet province, Lao People's Democratic RepublicSengphouvanh Ngonephady. Faculty of Graduate Studies, Mahidol University;
Sengphouvanh Ngonephady. (1999) Prevalence of oral diseases in Savannakhet province, Lao People's Democratic RepublicSengphouvanh Ngonephady . Mahidol University/Bangkok.
Sengphouvanh Ngonephady. Prevalence of oral diseases in Savannakhet province, Lao People's Democratic RepublicSengphouvanh Ngonephady. . Bangkok:Mahidol University, 1999.
Sengphouvanh Ngonephady. (1999) Prevalence of oral diseases in Savannakhet province, Lao People's Democratic RepublicSengphouvanh Ngonephady . Mahidol University/Bangkok.