Sources of information and unusual services :  a guide to informat ion available from organisations, agencies and experts in the United St ates, and to pamphlets, books and services: arranged by subject / 
ed ited by Raphael Alexander. 
 - 7th ed. 
 - New York :  Informational Directory Co.,  1964. 
 - 100 p. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information services--Directories--United States
<br/><br/><label>Dewey Class. No.: </label>061.3