Columbia subject headings:
Harlingerland (Ostfriesland, Germany)--History--17th century--Sources.
Harlingerland (Ostfriesland, Germany)--History--Chronology.
Ostfriesland (Germany)--History--17th century--Sources.
Ostfriesland (Germany)--History--Chronology.
Harvard subject headings:
Harlingerland (Ostfriesland, Germany)--History--17th century--Sources.
Harlingerland (Ostfriesland, Germany)--History--Chronology.
Ostfriesland (Germany)--History--17th century--Sources.
Ostfriesland (Germany)--History--Chronology.
Princeton subject headings:
Harlingerland (Ostfriesland, Germany)--History--17th century--Sources.
Harlingerland (Ostfriesland, Germany)--History--Chronology.
Ostfriesland (Germany)--History--17th century--Sources.
Ostfriesland (Germany)--History--Chronology.