Interact for GCSE mathematics:  practice for higher/ 

 - Cambridge :  Cambridge University Press,  2004. 
 - 168 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0521890241 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching Higher
<br/><br/><label>LC Class. No.: </label>QA11