Chambers, Harry T <br/><br/>
Copying, duplication and microfilm : systems and equipment for use in business and administration  
Harry T. Chambers  
 - 2nd ed. 
 - London  Business Books   1970 
 - [10],176p. : ill.,plates ; 23cm. 
<br/><br/><label>Dewey Class. No.: </label>686.4  / CHA