Hartley, Harry J., <br/><br/>
Sttalegles for programmed instructionali and educational technology. 

 - 231 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Enseñanza programada<br/>Educación--Instruccion programada
<br/><br/><label>LC Class. No.: </label>LB1028.5  / H36