"Singes Ouvrages illustrés." . . "Friendship Fiction." . . "Singes Romans, nouvelles, etc. pour la jeunesse." . . "Willy y Hugo"@es . "Willy y Hugo = Willy and Hugo" . "Ouvrages pour la jeunesse" . . "Willy y Hugo" . . "威利和朋友" . . . . . . "Willi wa Hyu" . . . . . . . . . "Marcel et Hugo" . . . . . "Marcel et Hugo = Willy and Hugh"@en . . . . . . . . . "De kleine, eenzame aap Sijmen vindt een goede vriend in de grote, eenvoudige aap Hugo. Prentenboek met paginagrote, kleurrijke afbeeldingen. Vanaf ca. 3 jaar." . "Fiction"@en . . . . "Fiction" . . . . . . "Willy and Hugh"@en . "Willy and Hugh" . . . "Children's stories" . "Willy the chimpanzee is lonely until he meets Hugh Jape in the park and the two become friends." . . . . . . . . "Sijmen en Hugo" . "Pictorial works" . "Willy the chimpanzee is lonely until he meets Hugh Jape in the park, and the two become friends."@en . "Willy the chimpanzee is lonely until he meets Hugh Jape in the park, and the two become friends." . . . . . . . . "Marcel and Hugo" . . . "Will and Hugo" . . . . . . "Picture books for children" . . . "Wil a Twm Twm" . "Juvenile works" . "Weili he peng you" . . "Juvenile works"@en . "Willy se sentia solo. Todos tenian amigos. Todos menos Willy ..." . . . . "Willy the chimpanzee is lonely until he meets Hugo Gorilón in the park, and the two become friends." . . "Picture books" . . . . . . . . . . . . "Marcel the chimpanzee is lonely until he meets Hugo Rille in the park, and the two become friends." . . . . . . . . . . "Readers (Elementary)" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Friendship." . . "Amitié Romans, nouvelles, etc. pour la jeunesse." . . "Picture books for children." . . "Friendship Juvenile fiction." . . "Amitié Fiction." . . "Amitié Ouvrages illustrés." . . "Solitude Fiction." . . "Social Situations Friendship." . . "Loneliness." . . "Spanish language materials." . . "Spanish. language materials." . "Chimpanzees Juvenile fiction." . . "Livres illustrés pour enfants." . . "Singes Ouvrages pour la jeunesse." . . "Livres d'images." . . "Chimpanzees." . . "Amitié Ouvrages pour la jeunesse." . . "Willy (Fictitious character : Browne) Juvenile fiction." . . "Amistad Novela juvenil." . . "PRC: Prep Yr 2." . . "Loneliness Juvenile fiction." . . "Willy (Fictitious character : Browne)" . . "Chimpanzees Fiction." . . "Chimpancés Novela juvenil." . . "Identité collective Ouvrages pour la jeunesse." . . "Littérature pour la jeunesse anglophone." . . . .