Encyclopedia of distance learning 

 - London  Idea Group Reference  2005 
 - 4V ; liv,2081p. 
<br/><br/><label>ISBN: </label> RS 39865.00 (USD 850.00), (Set of 4 vol.) 
<br/><br/><label>Source: </label> RS 39865.00 (USD 850.00), (Set of 4 vol.) 
<br/><br/><label>Dewey Class. No.: </label>R 378.03 ENC