Directory of industry data sources:   The united states of America and Canada 
/ Ballinger Publishing Company, Volume 1 
 - Cambride:   Ballinger Publishing Company,   1981 
 - xv, 613p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industry 
<br/><br/><label>Subjects--Index Terms: </label>Directory  
<br/><br/><label>Universal Decimal Class. No.: </label>R 62/69:061.6(058.7)  / M1.1