Columbia subject headings:
Chemische Fabrik E. Merck--Employees.
Darmstadt (Germany)--Buildings, structures, etc.
Pützer, Friedrich, 1871-1922--Criticism and interpretation.
Working class--Dwellings--Germany--Darmstadt.
Harvard subject headings:
Architecture, Domestic--Germany--Darmstadt.
Chemische Fabrik E. Marck--Employees.
Darmstadt (Germany)--Buildings, structures, etc.
Industrial housing--Germany--Darmstadt.
Pützer, Friedrich, 1871-1922--Criticism and interpretation.
Pützer, Friedrich, 1871-1922.
Working class--Dwellings--Germany--Darmstadt.
Princeton subject headings: