Introduces the concept of opposites through the adventures of two friends, Bunny and Hippo.
- ISBN10 0671681222
- ISBN13 9780671681227
- Publish Date 1 June 1989
- Publish Status Out of Print
- Out of Print 21 June 2021
- Publish Country US
- Imprint Silver Press
- Format Hardcover
- Pages 32
- Language English