Columbia subject headings:
Harvard subject headings:
Drift--Congresses.
Geology, Stratigraphic--Quaternary--Congresses
Glacial epoch--Congresses.
Glacial landforms--Congresses.
Princeton subject headings:
Drift--Congresses.
Geology, Stratigraphic--Quaternary--Congresses.
Sediments (Geology)--Congresses.