International directory of business information sources and services 
/ Europa Publications Limited 
 - London:   Europa Publications Limited,   1986 
 - ix, 378p. 
<br/><br/><label>ISBN: </label>0-946653-18-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Prolegomena
<br/><br/><label>Subjects--Index Terms: </label>Sources  Services  
<br/><br/><label>Universal Decimal Class. No.: </label>R 002:65](058.7)   / M6