Carney, Elizabeth, 1981- Frogs! / Elizabeth Carney. - Washington, D.C. National Geographic 2009 - 32 p. : col. ill. ; 23 cm. - National Geographic science readers. Level 1 National Geographic kids . H 480 Lexile H Raz-Plus Subjects--Topical Terms: Frogs--Juvenile literature. LC Class. No.: QL668.E2 / C346 2009 Dewey Class. No.: 597.8/9