TYLER Jenny <br/><br/>
Number puzzles / 
Jenny Tyler ; illustrated and designed by Graham Round. 
 - London :  Usborne ,  1980 
 - 32 p. : col. ill. 
<br/><br/><label>ISBN: </label>0860204359 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PUZZLES--JUVENILE LITERATURE