Rowntree,Derek <br/><br/>
Preparing materials for open, distance and flexible learning 
Derek Rowntree 
 - London  Koganpage  1974 
 - 170 
 - open and distance learning series .
<br/><br/><label>ISBN: </label>0749411597 
<br/><br/><label>Dewey Class. No.: </label>371.3028 R798P