Title: The apes: the gorilla, chimpanzee, orangutan, and gibbon
First published: 1967
Subjects: Singes, Apes, Primates, Gorilla, Chimpanzees, Bornean orangutan, Gibbons, Hominidae, Gorilla gorilla, Pan troglodytes, Pongo, Hylobates
LC classification: QL737.P9 R48