Columbia subject headings:
Harvard subject headings:
Geology, Stratigraphic--Cenozoic--Congresses
Geology, Stratigraphic--Pleistocene--Congresses
Geology, Stratigraphic--Quaternary--Congresses
Glacial epoch--Alaska--Congresses.
Glacial landforms--Alaska--Congresses.
Glaciers--Alaska--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Cenozoic--Congresses.
Glacial epoch--Alaska--Congresses.