Schwartz, Julius,  1907- <br/><br/>
It's fun to know why :  experiments with things around us / 
by Julius Schwartz ; Illustrated by Edwin Herron and Anne Marie Jauss 
 - 2nd ed. 
 - New York :  McGraw-Hill,  1973 
 - 159 p. :  ill. ;  21 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 27.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Juvenile literature<br/>Science--Experiments
<br/><br/><label>Dewey Class. No.: </label>500