Hughes, John Leo, 1920 <br/><br/>
Programmed learning: a critical evaluation 

 - London  Pitman  1967 
 - 238p.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction
<br/><br/><label>LC Class. No.: </label>LB1028.5.H82