Columbia subject headings:
Ants--Ecology.
Ants--Evolution.
Insect-plant relationships.
Insects--Ecology.
Insects--Evolution.
Plant ecology.
Plants--Evolution.
Harvard subject headings:
Ants--Ecology
Ants--Evolution.
Insect-plant relationships.
Insects--Ecology
Insects--Evolution
Plant ecology
Plants--Evolution
Princeton subject headings: