Kahn, Gilbert <br/><br/>
Progressive filing 

 - 8th ed. 
 - London:   McGraw-Hill  Book Company,   1969 
 - ix,118p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Progressive 
<br/><br/><label>Universal Decimal Class. No.: </label>D 651.54  / J5