Columbia subject headings:
Harvard subject headings:
America--Antiquities--Periodicals.
Geology--America--Periodicals.
Indians--Origin--Periodicals.
Paleo-Indians--Periodicals.
Paleoecology--America--Periodicals.
Princeton subject headings:
America--Antiquities--Periodicals.
Geology--America--Periodicals.
Indians--Origin--Periodicals.
Paleo-Indians--Periodicals.
Paleoecology--America--Periodicals.