Orang-Utans in zoologischen Gärten.
By: Mit einem Vorwort von Bernhard Grzimek.
Series: Ethologische Studien
Publisher: R. Piper
Published: 1972
Place of publication: München
Language: ger
Number of pages: 250
Subjects: Orangutan -- Behavior.; Zoo animals -- Behavior.
Notes: Bibliography: p. 242-[251]
Summary also in English.