Columbia subject headings:
Paleoclimatology--Periodicals.
Paleogeography--Periodicals.
Harvard subject headings:
Paleoclimatology--Periodicals.
Paleoecology--Periodicals.
Paleogeography--Periodicals.
Princeton subject headings:
Paleoclimatology--Periodicals.
Paleoecology--Periodicals.
Paleogeography--Periodicals.
Periodicals.