"N/A" <br/><br/>
HOMEWORK HELPERS NUMBER PUZZLES 

 - UK  DORLING KINDERSLEY LTD,OXFORD UNIVERSITY PRESS,PARAMOUNT BOOKS,CHILDREN'S PUBLISHERS  1991 
 - 64 
<br/><br/><label>ISBN: </label>0769629237 
<br/><br/><label>Dewey Class. No.: </label>000  / 1235