Mackenzie, Norman <br/><br/>
Open learning :  systems and problems in post-secondary education / 
Norman MacKenzie, Richmond Postgate, John Scupham ; other contributors, Bernard Bartram ... 
 - Paris :  UNESCO,  1975 
 - 498 p. ;  24 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9231013327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>University extension--Case studies
<br/><br/><label>Dewey Class. No.: </label>371.90473