Columbia subject headings:
Harvard subject headings:
Archives--Germany--Schleswig-Holstein--Catalogs.
Customs administration--Denmark--Copenhagen--History--19th century--Sources.
Customs administration--Germany--Schleswig-Holstein--History--19th century--Sources.
Duchies--Germany--Schleswig-Holstein--Indexes.
Schleswig (Germany and Denmark)--History--19th century--Sources.
Schleswig-Holsteinisches Landesarchiv. Abt. 68--Catalogs.
Princeton subject headings:
Catalogs.
Customs administration--Germany--Holstein--History--18th century--Sources--Indexes.
Customs administration--Germany--Holstein--History--19th century--Sources--Indexes.
Customs administration--Schleswig (Germany and Denmark)--History--18th century--Sources--Indexes.
Customs administration--Schleswig (Germany and Denmark)--History--19th century--Sources--Indexes.
Holstein--History--18th century--Sources--Indexes.
Holstein--History--19th century--Sources--Indexes.
Indexes.
Schleswig (Germany and Denmark)--History--18th century--Sources--Indexes.
Schleswig (Germany and Denmark)--History--19th century--Sources--Indexes.
Schleswig-Holsteinisches Landesarchiv--Catalogs.