Conyers, Angela D. <br/><br/>
The use of external information by managers in larger industrial companies, with special reference to the role of electronic external information services  [microform] / 
by Angela D. Conyers 
 - Wetherby, W. Yorks :  The British Library Document Supply Centre,  1989 
 - 5 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D) - The City University, 1989. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business information services--Use studies--United States