Prapai Kreerat. 2004. Risk factors associated with malaria infection : a study in Sukhirin district, Narathiwas province. Field of Study Epidemiology, Mahidol University;
Prapai Kreerat. (2004) Risk factors associated with malaria infection : a study in Sukhirin district, Narathiwas province . Mahidol University/Bangkok.
Prapai Kreerat. Risk factors associated with malaria infection : a study in Sukhirin district, Narathiwas province. . Bangkok:Mahidol University, 2004.
Prapai Kreerat. (2004) Risk factors associated with malaria infection : a study in Sukhirin district, Narathiwas province . Mahidol University/Bangkok.