Columbia subject headings:
Human geography--Middle West.
Middle West--Civilization.
Middle West--Social conditions.
Regionalism--Middle West.
Harvard subject headings:
Human geography--Middle West.
Middle West--Civilization.
Middle West--Social conditions.
Regionalism--Middle West.
Princeton subject headings:
Human geography--Middle West.
Middle West--Civilization.
Middle West--Social conditions.
Regionalism--Middle West.