Encyclopedia of business information sources / 
James Woy. 
 - 9th ed. 
 -  Gale Research Inc.  1993. 
<br/><br/>7994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business - Information services - Directories.
<br/><br/><label>LC Class. No.: </label>HF1001  / Enc.