Columbia subject headings:
Indians of North America--Economic conditions.
Indians of North America--Health and hygiene.
Indians of North America--Medical care.
Indians of North America--Social conditions.
Harvard subject headings:
Indians of North America--Economic conditions
Indians of North America--Health and hygiene
Indians of North America--Medical care
Indians of North America--Population
Princeton subject headings:
Indians of North America--Economic conditions.
Indians of North America--Health and hygiene.
Indians of North America--Medical care.
Indians of North America--Population.