Martin, Jackie <br/><br/>
Knockout :  First certificate : Workbook with key and tapescripts / 
Jackie Martin, Peter May. 
 - Oxford :  Oxford University Press,  1999. 
 - 128 p. :  ill. +  audio cassette 
<br/><br/><label>ISBN: </label>0194533670 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Certificate