Diehn, Gwen <br/><br/>
Science smart :  Cool projects for exploring the marvels of the planet earth / 
by Gwen Diehn and et al... 
 - New York :  Main street,  1966. 
 - 392p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>550.78  / DIE.S