Columbia subject headings:
Architecture, Domestic--Germany--Frankfurt am Main--History--20th century.
Architecture--Germany--Frankfurt am Main--History--20th century.
City planning--Germany--Frankfurt am Main--History--20th century.
Frankfurt (Germany)--Buildings, structures, etc.
Housing--Germany--Frankfurt am Main--History--20th century.
May, Ernst, 1886-1970.
Working class--Dwellings--Germany--Frankfurt am Main--History--20th century.
Harvard subject headings:
Architecture, Domestic--Germany--Frankfurt am Main.
City planning--Germany--Frankfurt am Main
Frankfurt am Main (Germany)--Buildings, structures, etc.--Designs and plans--History.
Housing development--Germany--Frankfurt am Main--History.
May, Ernst, 1886-1970.
Princeton subject headings:
Architecture, Domestic--Germany--Frankfurt am Main--History--20th century.
City planning--Germany--Frankfurt am Main--History--20th century.
Housing development--Germany--Frankfurt am Main--History--20th century.
May, Ernst, 1886-1970--Criticism and interpretation.
Public housing--Germany--Frankfurt am Main--History--20th century.