Monotype keyboard operator's manual  
/ The National Committee of Monotype User's Associations 
 - London:   The National Committee of Monotype User's Associations,   1950 
 - 204p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Subjects--Index Terms: </label>Operators 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.616.42  / J6