Columbia subject headings:
Christian antiquities--Germany--Ostfriesland.
Excavations (Archaeology)--Germany--Ostfriesland.
Law--Germany--Ostfriesland--History.
Ostfriesland (Germany)--Antiquities.
Ostfriesland (Germany)--Civilization.
Harvard subject headings:
Christian antiquities--Germany--Ostfriesland.
Excavations (Archaeology)--Germany--Ostfriesland.
Law--Germany--Ostfriesland--History.
Ostfriesland (Germany)--Antiquities.
Ostfriesland (Germany)--Civilization.
Wiemann, Harm, 1903-1985--Bibliography.
Princeton subject headings:
Ostfriesland (Germany)--History.
Wiemann, Harm, 1903-1985.