Booth, Andrew D. <br/><br/>
Automatic Digital Calculators   
by Andrew D. Booth and Kathleen H. V. Booth. 
 - 3rd ed. 
 - London  Butterworths  1965 
 - xi, 263p. 
<br/><br/><label>Dewey Class. No.: </label>621.38195  / N652