Riley, Peter D. <br/><br/>
Checkpoint Science 1 
by Peter D. Riley 
 - New edition 
 - London  Hodder Education  2011 
 - vi, 250 p.  ill. fig.tab. 
 - Cambridge Checkpoint Science  1 .
<br/><br/> includes bibliographical references & index 
<br/><br/><label>ISBN: </label>9781444126037 
<br/><br/><label>Dewey Class. No.: </label>500