Lewis, John,  1941- <br/><br/>
The Usborne pocket calculator book edited by Helen Davis 
John Lewis 
 - London  Usborne  1982 
 - 48 p.  ill.(some col.)  24cm 
 - Usborne electronics .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculating-machine--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>510  / .28