MacKenzie, N. Postgate, R. Scupham, J. <br/><br/>
Open learning:systems and problems in post-secondary education 

 - UNESCO  Paris  1975 
 - 498p. 
 - Open learning systems Remote teaching Distance education 
<br/><br/><label>ISBN: </label>921013327 
<br/><br/><label>Nat. Bib. No.: </label>2732 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>378MAC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Universal Decimal Class. No.: </label>378  1