Kongxay Phounphenghack. 2007. Knowledge and perception of mothers about immunization of children under 3 years of age in the Saythany district, Vientiane Lao P.D.R. Field of Study Primary Health Care Management, Mahidol University;
Kongxay Phounphenghack. (2007) Knowledge and perception of mothers about immunization of children under 3 years of age in the Saythany district, Vientiane Lao P.D.R. . Mahidol University/Bangkok.
Kongxay Phounphenghack. Knowledge and perception of mothers about immunization of children under 3 years of age in the Saythany district, Vientiane Lao P.D.R. . Bangkok:Mahidol University, 2007.
Kongxay Phounphenghack. (2007) Knowledge and perception of mothers about immunization of children under 3 years of age in the Saythany district, Vientiane Lao P.D.R. . Mahidol University/Bangkok.