Bailey, M F  <br/><br/>
History of classification of patents  

 - U.S.A.:   The Journal of the patent office society,   1946  
 - 84p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification patents 
<br/><br/><label>Subjects--Index Terms: </label>Library history  Library management  
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.4:608.3(091)   / H6