Campbell, Malcolm J. <br/><br/>
Business information services :  some aspects of structure organisation and problems / 
Malcolm J. Campbell. 
 - 2nd ed. 
 - London :  Clive Bingley,  1974. 
 - 179 p. 
<br/><br/><label>ISBN: </label>0851573215 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information services.<br/>Business information services