Pilpel, Harriet F <br/><br/>
Coopyright guide 

 - New York:   R R Bowker Company,   1963 
 - 40p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information science
<br/><br/><label>Universal Decimal Class. No.: </label>D 347.78(025)  / K3