Columbia subject headings:
Geology, Stratigraphic--Quaternary--Congresses.
Paleontology--Quaternary--Congresses.
Harvard subject headings:
Geology, Stratigraphic--Quaternary--Congresses
Paleontology--Quaternary--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Quaternary--Congresses--Abstracts.
Paleontology--Quaternary--Congresses--Abstracts.