Yaowalak Yim-On. Sociolinguistics / Yaowalak Yim-on ; School of Humanities, Bangkok University - 3rd ed. , rev. ed. - Bangkok : Texts and Instructional Materials Department, The Univ., 2002 - 160 p. : ill. Includes bibliographical references Subjects--Topical Terms: SOCIOLINGUISTICS LC Class. No.: P40.4 .T5 / Y368S 2002