Cahalin, Roger. <br/><br/>
Head start to AS maths :  bridging the gap between GCSE and AS level / 
[authors: Roger Cahalin, Alessandra Desbottes, Suzanne Doyle]. 
 - Kirkby in Furness :  Coordination Group,  c2004. 
 - 37 p. ;  30 cm. 
<br/><br/> Cover title.