Library of congress subject headings 
/ Prepared by the office for subject cataloging policy collections services 
 - 23rd ed. 
 - Washington:   Library of Congress,   2000 
 - iii, 5230p. 
<br/><br/> Vol. 4 N-R 
<br/><br/><label>ISSN: </label>1048-9711 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LCSH
<br/><br/><label>Subjects--Index Terms: </label>Symbols 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.43LCSH  / P0.4