Dussadee Sindermsuk The survey of speech defects among prathom 4 students in Mitsampan school group. Thesis (M.A. (Communication Disorders))--Mahidol University, 1986. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/107011
Title
The survey of speech defects among prathom 4 students in Mitsampan school group