Mager, Robert F. <br/><br/>
Preparing objectives for programmed instruction 
Robert F. Mager 
 - 62 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instrucción programada
<br/><br/><label>Dewey Class. No.: </label>371.394 424  / MAG 1962