Gorillas.
Garner, R. L. Gorillas and chimpanzees.
In a small library there would most likely be other books upon Gorillas, but hardly a second upon Chimpanzees, therefore the second entry would be
Chimpanzees, Gorillas and. Garner, R. L.
To bring this book fully under the notice of those interested in the monkey tribe cross-references are necessary. Presuming that there were already entries under “Monkeys” (generally) and “Apes” (particularly), then all the entries would be bound together by
Monkeys.
See also Apes.
Apes.
See also Gorillas.