Petrie, Jean <br/><br/>
The earth / 
by Jean Petrie ; illustrated by David A. Hardy 
 - London :  Oxford University Press,  1967 
 - 96 p. ;  29 cm. 
 - Oxford childrens reference library;  6 .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries<br/>Encyclopedias and dictionaries
<br/><br/><label>Dewey Class. No.: </label>030