Publisher description for Polar bears past bedtime / by Mary Pope Osborne ; illustrated by Sal Murdocca.
Bibliographic record and links to related information available from the Library of Congress catalog
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The Magic Tree House transportss Jack and Annie to the freezing Arctic. There, they must solve the final riddle to become master librarians. But it's not going to be easy--especially when they have cracking ice, a seal hunter, and a prodigious polar bear to deal with. Will they be able to solve the riddle before they get iced themselves?
Library of Congress subject headings for this publication: Polar bear Fiction, Arctic regions Fiction, Magic Fiction, Tree houses Fiction