A directory of information resources in the United States: social sciences. 

 - Rev. ed. 
 - Washington :  Library of Congress; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.],  1973. 
<br/><br/> Issued in 1965 by the center under its earlier name: National Referral Center for Science and Technology. 
<br/><br/><label>ISBN: </label>0844400866   
<br/><br/><label>LCCN: </label>73003297 //r913 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learned institutions and societies -- United States -- Directories.--Learned institutions and societies -- United States -- Directories.--Learned institutions and societies -- United States -- Directories.<br/>Information services -- United States.--Information services -- United States.
<br/><br/><label>LC Class. No.: </label>AS25  / .A46 1973 
<br/><br/><label>Dewey Class. No.: </label>300/.7