The national union catalog :  a cumulative author list representing library of congress printed cards and titles reported by other american libraries / 
compiled by the Library of Congress with the cooperation of the resources committee of the resources and technical services division, American Library Association 
 - Washington, D.C. :  Library of Congress,  1971 
 - 1081 p. ;  27 cm. 
<br/><br/> April - June 1971 
<br/><br/>Pt.4.-.S-Z.-.1-1081 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Catalogs, Union<br/>Libraries--Catalogs
<br/><br/><label>Dewey Class. No.: </label>010.42