Mercer, G. Lawrence <br/><br/>
Accounting and book-keeping machines/2e 

 - 2ed. 
 - London  Macdonald and evans  1963 
 - 49p. 
<br/><br/><label>Subjects--Index Terms: </label>Accounting Book keeping 
<br/><br/><label>Dewey Class. No.: </label>657  / MER