Holmberg, Borje <br/><br/>
Theory and practice of distance education 

 - London  Routledge  1989 
 - xii,252  Hb  22cm 
<br/><br/><label>ISBN: </label>0-415-00996-0 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>374