The National union catalog :  a cumulative author index / 
United States Library of Congress 
 - Washington, D. C. :  Library of Congress,  1971 
 - 1054 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Union catalogs--United States
<br/><br/><label>Dewey Class. No.: </label>018.10973