Booth, A.D.  1918- <br/><br/>
Automatic digital calculators / 
by Andrew D. Booth and Kathleen H.V. Booth. 
 - 2nd ed. 
 - London :  Butterworths Scientific,  1956. 
 - ix, 261 p., [3] plates  plans, plates  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers.