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Khampheng Boupha Khamphanh Sonthanalay Khampheng Saysompheng Khampheng Sayavutthi Khamphat Pheubobouda Khamphaeng Chitavong Khamphuang Choummaly Khám phá cơ thể người Khám phá Khám phá lớn về địa lýTài liệu tham khảo
WikiPedia: Khampheng_Saysompheng http://kpl.gov.la/En/Page/Politic/PoliticSystem.as... //www.jstor.org/stable/resrep00852.14 http://www.oit.org/wcmsp5/groups/public/@ed_norm/@... https://www.usaid.gov/laos/press-releases/aug-26-2... https://la.usembassy.gov/u-s-celebrates-independen... https://www.jstor.org/stable/resrep00852.14 https://www.un.org/sg/en/countries/lao-peoples-dem... https://www.la.undp.org/content/lao_pdr/en/home/pr...