Carter, L.R. <br/><br/>
The Pocket Calculator 
Huzan, E. 
 - Kent:  Hodder & Stoughton;  1984. 
 - viii,183p.:  20cm. 
 - Teach Yourself .
<br/><br/><label>ISBN: </label>9780340338360 
<br/><br/><label>Gov. Doc. Class. No.: </label>WE/53