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Nguyen และผู้แต่งคนอื่นๆ. Economic analysis of school-based oral health programme at primary school in the North of Vietnam. . Bangkok:Chulalongkorn University, 1995.
Nguyen และผู้แต่งคนอื่นๆ. (1995) Economic analysis of school-based oral health programme at primary school in the North of Vietnam . Chulalongkorn University/Bangkok.