Columbia subject headings:
Europe, Northern--Archival resources--Washington (D.C.)
Europe, Northern--Library resources--Washington (D.C.)
Europe--Archival resources--Washington (D.C.)
Europe--Library resources--Washington (D.C.)
Harvard subject headings:
Archival resources--Washington (D.C.)
Europe, Northern--Archival resources--Washington (D.C.)
Europe, Northern--Archival resources.
Europe, Northern--Library resources--Washington (D.C.)
Europe, Northern--Library resources.
Europe--Archival resources--Washington (D.C.)
Europe--Archival resources.
Europe--Library resources--Washington (D.C.)
Europe--Library resources.
Library resources--Washington (D.C.)
Princeton subject headings:
Europe, Northern--Archival resources--Washington (D.C.).
Europe, Northern--Library resources--Washington, (D.C.).
Europe--Archival resources--Washington (D.C.).
Europe--Library resources--Washington (D.C.).