Wilson, Rachel. Butterflies and frogs / by Rachel Wilson. - Harlow, England : Pearson Education Ltd. in association with Penguin Books Ltd., 2013. - 24 p. : ill. (col.) ; 23 cm. - Penguin kids. Level 3 . - Penguin kids. Level 3. . Key Stage 2. ISBN: 9781408288337 Subjects--Topical Terms: Readers--Butterflies.ReadersxRed-eyed treefrog.Readers (Elementary) Dewey Class. No.: 418.64