Langdon, Danny G. <br/><br/>
Interactive instructional designs for individualized learning 
[by] Danny G. Langdon. 
 - Englewood Cliffs, N.J.  Educational Technology Publications  c1973. 
 - ix, 149 p.  ill.  23 cm. 
<br/><br/>Bibliography : p. 146-147. 
<br/><br/><label>ISBN: </label>0877780412 
<br/><br/><label>LCCN: </label>72089577 //r81 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional systems--Design.<br/>Individualized instruction
<br/><br/><label>LC Class. No.: </label>LB1570  / .L27 
<br/><br/><label>Dewey Class. No.: </label>371.3943  / L273i