Holmberg, Borje. <br/><br/>
Status and trends of distance education / 
Holmberg Borje. 
 - London :  Nichols,  c1981. 
 - 200 p. 
<br/><br/><label>ISBN: </label>0850384141 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Correspondence school and courses.