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by Sandra BoyntonBoard book details (USA). details (United Kingdom). details (Germany). details (Canada). ISBN: 978-0-689-83499-8 ISBN-10: 0-689-83499-3 |
| See also: | ||
| 2000 | Board book | Hippos Go Berserk! |
| 1996 | Paperback | Hippos Go Berserk! |
| 1986 | Paperback | Hippos Go Berserk! |
| 1979 | Paperback | Hippos go berserk |
| 1979 | Hardcover | Hippos go berserk |