When Ping sees Hanno in the zoo, he is excited, but also unhappy. Hanno is a magnificent African gorilla, big and black and much stronger than a man. But how can this wonderful wild animal live in a cage, behind bars and locked doors? Then Hanno escapes from the zoo. And a few days later his footprints are seen near Green Knowe, the old house deep in the English countryside where Ping is spending his holiday . . . ISBN: 9780194790734 Kiadó: Oxford University Press Szerző: Lucy M. Boston Súly: 80g