
About this book
In five brief episodes two hippopotamuses reinforce their friendship.
Subjects
Juvenile fictionFictionFriendshipHippopotamusChinese language materialsBilingualHippopotamus, fictionChildren's fictionGeorge and martha (fictitious characters), fictionFriendship, fictionHippopotamusesCommunicable DiseasesHistoryInfectious Disease TransmissionResearchPathology