Zielgerichtetes Handeln bei Menschenaffen 1981 Directed by Peter W. Fera
Chimpanzees are kept in a large enclosure at the Arnhem Research Station. There, some experiments are carried out to test the intelligence of the chimpanzees.
Chimpanzees are kept in a large enclosure at the Arnhem Research Station. There, some experiments are carried out to test the intelligence of the chimpanzees.
