Albert Hopper, science hero /
Albert Hopper, science hero / John Himmelman. - First edition. - pages cm. - Albert Hopper, science hero ; 1 .
Frog--and Science Hero--Professor Albert Hopper travels with his niece Polly and nephew Tad to the center of the Earth, encountering prehistoric cavefrogs, dinosaur fossils, and Yeti on the way.
Ages 6-8. Henry Holt and Company. Grades K-1. Henry Holt and Company.
9781250230164
2019037050
Frogs--Fiction.
Scientists--Fiction.
Voyages and travels--Fiction.
Adventure and adventurers--Fiction.
Earth (Planet)--Core--Fiction.
PZ7.H5686 / Aj 2020
FIC/SKI