Columbia subject headings:
Harvard subject headings:
Geology, Stratigraphic--Quaternary--Congresses
Geology--China--Congresses.
Geology--Hungary--Congresses.
Loess--China--Congresses.
Loess--Hungary--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Quaternary--Congresses.
Geology--China--Congresses.
Geology--Hungary--Congresses.
Loess--China--Congresses.
Loess--Hungary--Congresses.