Doff, Adrian. <br/><br/>
Language in use :  self-study workbook with answer key(Pre-intermediate)  / 
Adrian Doff and Christopher Jones. 
 - New York :  Cambridge university press,  1991 
 - 96 p. :  ill. ;  29 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>05217740555 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English Language
<br/><br/><label>Dewey Class. No.: </label>425/DOL