MacKenzie, Norman Ian. <br/><br/>
Open learning:  systems and problems in post-secondary education/ 
Norman MacKenzie, Richman Postgate, John Schuphm other contributors Bernard Bartram ... (et al.). 
 - Paris;  Unesco Press,  1975. 
 - 498 p.:    24 cm. 
<br/><br/><label>ISBN: </label>9231013327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>University extension--Case studies.