Ryan, Lawrie <br/><br/>
Top chemistry grades for you/ 
by Lawrie Ryan 
 - London  Nelson Thornes Ltd  c2006 
 - 120p.:  Col. ill. 
<br/><br/> Includes index  
<br/><br/><label>ISBN: </label>9780748783762 
<br/><br/><label>Dewey Class. No.: </label>540