Columbia subject headings:
European Association of Geoscientists and Engineers--History--20th century.
Harvard subject headings:
European Association of Geoscientists and Engineers--History.
Geology--Europe--History.
Geology--Societies, etc.--History.
Princeton subject headings:
European Association of Geoscientists and Engineers.
Geology--Europe--History.
Geology--Societies, etc.--Europe.