Perry, Walter, Sir, 1921- <br/><br/>
A short guide to distance education / 
Walter Perry and Greville Rumble. 
 - Cambridge :  International Extension College,  1987. 
 - iv, 31 p. ;  23 cm. 
<br/><br/>Bibliography : p.31 
<br/><br/><label>ISBN: </label>0903632403  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education.<br/>Correspondence schools and courses.