Columbia subject headings:
Red colobus monkey--Behavior.
Red colobus monkey--Ecology.
Red colobus monkey.
Harvard subject headings:
Rare mammals
Red colobus monkey--Behavior.
Red colobus monkey--Ecology.
Red colobus monkey.
Princeton subject headings:
Rare mammals.
Red colobus monkey--Behavior.
Red colobus monkey--Ecology.
Red colobus monkey.