Parker, Bertha Morris <br/><br/>
Gravity / 
by Bertha Morris Parker ; illustrated by Florence Meanelly and A. K. Bilder 
 - Exeter :  Wheaton,  1960 
 - 35 p. :  ill. (part col.) ;  22 cm. 
 - Her The Basic science education series .
<br/><br/> United Kingdom edition 
<br/><br/><label>ISBN: </label> Rs. 5.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitation--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>531