Gent, Dave. <br/><br/>
OCR A2 chemistry / 
Dave Gent and Rob Ritchie. 
 - Harlow :  Heinemann,  2008. 
 - vi, 266 p. :  col. ill. ;  28 cm. 
<br/><br/> Former multmedia  item, formerly accompanied by withdrawn cd-rom.  Includes index. 
<br/><br/><label>ISBN: </label>9780435691981 0435691988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry--Examinations--Study guides.<br/>Chemistry--Problems, exercises, etc.