Sparks Jerry D <br/><br/>
Overhead projection 
Sparks Jerry D 
 - Englewood  Cliffs Educational Technology        1981 
 - 95p.  cm. 
<br/><br/><label>Standard No.: </label>55424 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> TEACHING<br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T:3,1, M1