Columbia subject headings:
Harvard subject headings:
Indians of North America--Cultural assimilation.
Indians of North America--First contact with Europeans.
Indians of South America--Cultural assimilation.
Indians of South America--First contact with Europeans
Princeton subject headings:
Indians of North America--Cultural assimilation.
Indians of North America--First contact with other peoples.
Indians of South America--Cultural assimilation.
Indians of South America--First contact with other peoples.