Encyclopaedic dictionary of library and information science - Vol.iv 

 - New Delhi:  Anmol Publications,  1990. 
 - 934-1189p.;  21cm 
<br/><br/><label>ISBN: </label>81-7041-185-8 
<br/><br/><label>Dewey Class. No.: </label>020.03  / ENC