Polar bears past bedtime /
Osborne, Mary Pope. 
Polar bears past bedtime / by Mary Pope Osborne ; illustrated by Sal Murdocca. - New York : Scholastic, c1998. - 71 p. : ill. ; 20 cm. - Magic tree house ; #12 . - Osborne, Mary Pope. Magic tree house series ; #12. .
"A Stepping Stone book."
Their magic tree house takes Jack and Annie to the Arctic, where a polar bear leads them onto very thin ice.
"RL: 2.1"--Cover p. [4].
0590706381 (pbk.) 9780590706384 (pbk.)
Polar bear--Fiction.
Magic--Fiction.
Tree houses--Fiction.
Polar bear--Juvenile fiction.
Magic--Juvenile fiction.
Tree houses--Juvenile fiction.
Arctic regions--Fiction.
Arctic regions--Juvenile fiction.
PZ7.O81167 / Po 1998
FIC / Osb
                        Polar bears past bedtime / by Mary Pope Osborne ; illustrated by Sal Murdocca. - New York : Scholastic, c1998. - 71 p. : ill. ; 20 cm. - Magic tree house ; #12 . - Osborne, Mary Pope. Magic tree house series ; #12. .
"A Stepping Stone book."
Their magic tree house takes Jack and Annie to the Arctic, where a polar bear leads them onto very thin ice.
"RL: 2.1"--Cover p. [4].
0590706381 (pbk.) 9780590706384 (pbk.)
Polar bear--Fiction.
Magic--Fiction.
Tree houses--Fiction.
Polar bear--Juvenile fiction.
Magic--Juvenile fiction.
Tree houses--Juvenile fiction.
Arctic regions--Fiction.
Arctic regions--Juvenile fiction.
PZ7.O81167 / Po 1998
FIC / Osb