Mann A P Ed. <br/><br/>
Association for Programmed Learning and Educational Technology    Proceedings 

 - London  Isaac Pitman         1973 
 - 404p.  cm. 
<br/><br/><label>Standard No.: </label>69390 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>Y:393p1,N69, L3