Columbia subject headings:
Harvard subject headings:
Economic history--1750-1918
Industrial revolution--Germany--Westphalia--History.
Westphalia (Germany)--Economic conditions.
Westphalia (Germany)--History--Sources.
Princeton subject headings:
Economic history--1750-1918.
Industrial revolution--Germany--Westphalia--History.
Westphalia (Germany)--Economic conditions.
Westphalia (Germany)--History--Sources.