Helpful Betty the hippopotamus finds a magnifying glass while tidying up the jungle and goes looking for a mystery to solve.
- ISBN10 0876148321
- ISBN13 9780876148327
- Publish Date 1 May 1994
- Publish Status Out of Print
- Out of Print 28 October 2015
- Publish Country US
- Imprint Lerner Publishing Group
- Format Hardcover
- Language English