Azar, Betty Schrampfer. <br/><br/>
Understending ad Using Eglish Grammar./ 
Azar, Betty Schrampfer. 
 - Washington  Pearson  2006 
 - 437p.  20*25  cm 
<br/><br/><label>ISBN: </label>0-13-235336-9 
<br/><br/><label>Universal Decimal Class. No.: </label>860(075)