Synchronic and diachronic approaches to linguistic variation and change / 
Editor : Thomas J. Walsh. 
 - Washington :  Georgetown University Press,  1989. 
 - x, 357 p. :  ill. 
<br/><br/>Includes bibliogr. references 
<br/><br/><label>ISBN: </label>0878401237 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linguistics