The role of technology in distance education / 
edited by A. W. Bates. 
 - London :  Croom Helm,  1984. 
 - 231p. ;  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0709932243  uk 031268942X  us 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Open University.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education--Audio--visual aids.<br/>Educational technology.