Cemach, Harry P. <br/><br/>
Elements of punched card accounting 
by Harry P. Cemach 
 - London  Pitam  1951 
 - 137p. 
<br/><br/> 18/- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Punched Card Systems - Accounting
<br/><br/><label>Dewey Class. No.: </label>L807 C333