Yaowalak Yim-On. Sociolinguistics / Yaowalak Yim-on ; English Department, School of Humanities, Bankok University - 4th rev. ed. - Pathum Thani : Bangkok Univ. Press, 2006 - 186 p. : ill. Includes bibliographical references ISBN: 9742191204 Subjects--Topical Terms: SOCIOLINGUISTICS LC Class. No.: P40.4 .T5 / Y368S 2006