Langdon, Danny G. <br/><br/>
Interactive instructional designs for individualized learning 
[by] Danny G. Langdon. 
 - Englewood Cliffs, N.J.,  Educational Technology Publications  [1972, c1973] 
 - ix, 149 p.  illus.  23 cm. 
<br/><br/>Bibliography: p. 146-147. 
<br/><br/><label>ISBN: </label>0877780412 
<br/><br/><label>LCCN: </label>72089577  
<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>371.39/43