Columbia subject headings:
Harvard subject headings:
Electric utilities--Germany--Rottweil--History--19th century.
Electric utilities--Germany--Rottweil--History--20th century.
Electrification--Germany--Rottweil--History--19th century.
Electrification--Germany--Rottweil--History--20th century.
Princeton subject headings:
Electric utilities--Germany--Rottweil--History--19th century.
Electric utilities--Germany--Rottweil--History--20th century.
Electrification--Germany--Rottweil--History--19th century.
Electrification--Germany--Rottweil--History--20th century.