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 - 207 pages :   colour illustrations ;   24 cm 
 - The Original .
 - The Original .
<br/><br/><label>ISBN: </label>9780753728048 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's questions and answers. ; Science - Encyclopedias, Juvenile. ; Science - Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>032.02