Langan, John, <br/><br/>
English skills / 
John Langan. 
 - 5th ed. 
 - New York :  McGraw-Hill,  c2006. 
 - xvi,604 p. :  col. ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0072962763  TZS 24,000/= 0073210412 9780073210414 0072962771 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language
<br/><br/><label>Dewey Class. No.: </label>421 LAN