Vallop Ditchsuwan. 1996. Factors associated with accident causing injuries among preschool children in Phatthalung province. Faculty of Graduate Studies, Mahidol University;
Vallop Ditchsuwan. (1996) Factors associated with accident causing injuries among preschool children in Phatthalung province . Mahidol University/Bangkok.
Vallop Ditchsuwan. Factors associated with accident causing injuries among preschool children in Phatthalung province. . Bangkok:Mahidol University, 1996.
Vallop Ditchsuwan. (1996) Factors associated with accident causing injuries among preschool children in Phatthalung province . Mahidol University/Bangkok.