Powell, Sallie <br/><br/>
Countdown to gcse biology 

 - London :  Macmillan,  1987. 
 - 82p.;  20cm 
<br/><br/><label>ISBN: </label>0-333-41858-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>574  / POW