Porter, A. <br/><br/>
Further chemistry tests for GCSE 
by A. Porter and T. Wood 
 - Cheltenham:  Stanley Thornes (Publishers) Ltd,  1990. 
 - x, 117p. 
<br/><br/><label>ISBN: </label>0748701613 
<br/><br/><label>Dewey Class. No.: </label>540