Buffa, Elwood <br/><br/>
Programmed Learning AID/ 
Elwood Buffa 
 - Homewood, Illinois   Learning Systems Co.  1973 
 - xi.; 184 p.; ill.; 25 cm 
<br/><br/><label>ISBN: </label>256014817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed Learning AID