Columbia subject headings:
Harvard subject headings:
Architecture, Modern--19th century--Germany--Mainz (Rhineland-Palatinate)
Architecture--Germany--Mainz (Rhineland-Palatinate)
City planning--Germany (West)--History.
City planning--Germany--Mainz (Rhineland-Palatinate)
Mainz (Rhineland-Palatinate, Germany)--Buildings, structures, etc.
Mainz (Rhineland-Palatinate, Germany)--History
Princeton subject headings:
Architecture, Modern--19th century--Germany--Mainz (Rhineland-Palatinate)--History.
Architecture--Germany--Mainz (Rhineland-Palatinate)--History.
City planning--Germany--Mainz (Rhineland-Palatinate)--History.