The use of programed instruction in United States schools 

 - New York  United States. Department of Health, Education, and Welfare, Office of Education  1962 
 - 83p.  28cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction
<br/><br/><label>LC Class. No.: </label>PAM LB1028.5.C43