Directory of industry data sources:   The United States of America and Canada 

 - Massachusetts,   Ballinger PUblishing Comapny,   1981 
 - xv, 1140p. 
<br/><br/> Vol. 2; 0-88410-854-6; xv, 1140p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic
<br/><br/><label>Subjects--Index Terms: </label>Monographs 
<br/><br/><label>Universal Decimal Class. No.: </label>R 338(058)  / M1.2