Booth, Andrew D. <br/><br/>
Automatic digital calculators 
Andrew D. Booth 
 - London  Butterworths  1953 
 - 230p.  ill.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital  calculators
<br/><br/><label>LC Class. No.: </label>QA76.B6