Riley, Peter D. <br/><br/>
Checkpoint science 3  student's book 
Peter D. Riley 
 - London  Hodder Education  2011 
 - viii,246p.  ill.  28cm 
<br/><br/>Includes bibliographical references and indexs 
<br/><br/><label>ISBN: </label>9781444143782 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Textbooks