Walker James A <br/><br/>
Variation in linguistic systems 
Walker James A 
 - New York  Routledge USA        2010 
 - xviii,158p.  cm. 
<br/><br/><label>ISBN: </label>9780415990684 (pbk)  2372.20 
<br/><br/><label>Standard No.: </label>112725 
<br/><br/><label>Source: </label> 33378, 04/11/2011, Segment Book Distributors  Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LINGUISTICS
<br/><br/><label>Dewey Class. No.: </label>P,9D, Q0