I didn't know that crocodiles yawn to keep cool

I didn't know that crocodiles yawn to keep cool

Bibliographic Details
Main Author: Petty, Kate
Format: Book
Published: London : Aladdin Books , 1998
Subjects:
Alligators > Juvenile literature
Crocodiles > Juvenile literature
Description
Physical Description:32p. : ill. ; 25cm.
ISBN:0749632445

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