Columbia subject headings:
Cebidae--Ecology.
Mammals--Ecology--Peru.
Mammals--Ecology.
Harvard subject headings:
Cebidae--Ecology.
Mammals--Ecology
Mammals--Ecology--Peru.
New World monkeys--Ecology--Peru.
Primates--Ecology--Peru.
Princeton subject headings:
Cebidae--Ecology.
Mammals--Ecology.
Mammals--Peru--Ecology.