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Nisachon Channukool. (1998) Factors related to the prevalence of Enterobius vermicularis infection in Nhong-Sum-Rong school children, Udornthani . Mahidol University/Bangkok.
Nisachon Channukool. Factors related to the prevalence of Enterobius vermicularis infection in Nhong-Sum-Rong school children, Udornthani. . Bangkok:Mahidol University, 1998.
Nisachon Channukool. (1998) Factors related to the prevalence of Enterobius vermicularis infection in Nhong-Sum-Rong school children, Udornthani . Mahidol University/Bangkok.