Duckworth, Michael. <br/><br/>
Countdown to first certificate :   student’s book/  

 - Oxford :    Oxford University Press,   1999. 
 - 191p.:  ill.;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language Grammar
<br/><br/><label>LC Class. No.: </label>PE1112