Mackenzie, Norman, Postgate, Richmond and Scupham, John <br/><br/>
Open learning  systems and problems in post-secondary education 

 - Paris  The unesco press  1975 
 - 498p. 
<br/><br/><label>ISBN: </label>9231013327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education<br/>Education<br/>Open learning
<br/><br/><label>Dewey Class. No.: </label>374.4  / MAC