Columbia subject headings:
Architects--Germany--Biography.
Haller, Martin, 1835-1925--Exhibitions.
Haller, Martin, 1835-1925.
Harvard subject headings:
Haller, Martin, 1835-1925--Exhibitions.
Princeton subject headings:
Architects--Germany--Biography.
Haller, Martin, 1835-1925--Exhibitions.
Haller, Martin, 1835-1925.