Open learning :  systems and problems in post-secondary education / 
Norman MacKenzie ... [et. al.] 
 - Paris :  Unesco Press,  1975 
 - 498 p. ;  24 cm. 
<br/><br/>Bibliography : p. 497-498 
<br/><br/><label>ISBN: </label>9231013327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>University extension--Case studies<br/>Open learning<br/>Distance education
<br/><br/><label>Dewey Class. No.: </label>370.115