Columbia subject headings:
Climatic changes--Europe--Bibliography--Catalogs.
Climatic changes--Europe--Charts, diagrams, etc.
Climatic changes--Europe.
Middle Ages.
Paleoclimatology--Europe.
Harvard subject headings:
Climatic changes--Europe--Bibliography--Catalogs.
Climatic changes--Europe--Charts, diagrams, etc.
Climatic changes--Europe.
Middle Ages.
Paleoclimatology--Europe.
Princeton subject headings:
Climatic changes--Europe--History--Sources.
Europe--Climate--History--Sources.
Middle Ages--History--Sources.