Thomas, Thomas Leslie <br/><br/>
Mathematics by calculating machine 
T. L Thomas and Mrs A Thomas 
 - London  Cassell & Company Ltd  c1962 
 - xiii, 245p.  ill.  24cm 
<br/><br/><label>ISBN: </label>003620495 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculating machine<br/>Mathematics