Mentzer, Richard C. <br/><br/>
The Core Package. 

 -  Educational Technology Publications  1980 
 - XII, 107 P. ; 23 CM. 
<br/><br/> THE INSTRUCTIONAL DESIGN LIBRARY ; V.21 
<br/><br/><label>ISBN: </label>877781419 
<br/><br/><label>Dewey Class. No.: </label>371.39442 MEN 1980