Azar, Betty Schrampfer,  1941- <br/><br/>
Understanding and using English grammar :  with answer key / 
Betty Schrampfer Azar. 
 - 4th ed. 
 - 530 p. :  ill. ;  25 cm.  + 1 CD-ROM 
<br/><br/> International edition-Not for sale in the U.S.A. 
<br/><br/><label>ISBN: </label>0132464500 9780132464505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Study and teaching--Foreign speakers
<br/><br/><label>LC Class. No.: </label>PE