Theoretical principles of distance education / 
edited by Desmond Keegan. 
 - London ;  New York :  Routledge,  1993. 
 - xiii, 272 p. :  ill. ;  22 cm. 
 - Routledge studies in distance education .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0415089425 
<br/><br/><label>LCCN: </label>93230530  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education.<br/>Education--Aims and objectives.<br/>Educational technology.
<br/><br/><label>LC Class. No.: </label>LC5800  / THE1993