Theoretical Principles of Distance Education 

 - London:  Routledge,  1993. 
 - xiii, 272p.;  22cm 
<br/><br/><label>ISBN: </label>415089425 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance Education<br/>Adult Education
<br/><br/><label>Dewey Class. No.: </label>374.4  / THE