Lock , R Northwood  . <br/><br/>
Manual of library economy /  
ed. by R Northwood Lock. 
 - London :   Clive Bingley ,   1977. 
 - 447 p :   diag. ;   24 cm .  
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0208015388  NULL 
<br/><br/><label>Subjects--Index Terms: </label>LIBRARY SCIENCE 
<br/><br/><label>Dewey Class. No.: </label>020  / LOC/M