Columbia subject headings:
Harvard subject headings:
Geology--Europe--Congresses
Geology--Soviet Union--Congresses
Molasse--Europe--Congresses.
Molasse--Soviet Union--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Cenozoic.
Geology, Stratigraphic--Paleozoic.
Molasse--Europe, Central.
Molasse--Europe, Eastern.