Columbia subject headings:
Agricultural ecology--Andes Region--History.
Biotic communities--Andes Region--History.
Mountain ecology--Andes--History.
Harvard subject headings:
Agricultural ecology--Andes Region--History.
Biotic communities--Andes Region--History.
Incas--Agriculture--Social aspects.
Mountain ecology--Andes Region--History.
Traditional ecological knowledge--Andes Region.
Princeton subject headings:
Agricultural ecology--Andes Region--History.
Biotic communities--Andes Region--History.
Mountain ecology--Andes--History.