Hennessy David E <br/><br/>
Elementary teacher's classroom science demonstrations and activities ed by Elaine V Walworth 
Hennessy David E 
 -  1964 
<br/><br/><label>Standard No.: </label>87,942 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T15:38, K4