Chawakorn Onchan. 2002. The study of environmental factors related to dengue hemorrhagic fever epidemic in Phatthalung province. Field of Study Technology of Environmental Manangement, Mahidol University;
Chawakorn Onchan. (2002) The study of environmental factors related to dengue hemorrhagic fever epidemic in Phatthalung province . Mahidol University/Bangkok.
Chawakorn Onchan. The study of environmental factors related to dengue hemorrhagic fever epidemic in Phatthalung province. . Bangkok:Mahidol University, 2002.
Chawakorn Onchan. (2002) The study of environmental factors related to dengue hemorrhagic fever epidemic in Phatthalung province . Mahidol University/Bangkok.