Hawken, W.R.  <br/><br/>
Copying methods manual  (Book) 

 - Chicago  American Library Association  1966 
 - 375p.  29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copying processes
<br/><br/><label>Universal Decimal Class. No.: </label>651.925 HAW  / 466