Columbia subject headings:
Astronomical observatories--Germany--Potsdam--Maintenance and repair.
Einstein Tower.
Historic buildings--Conservation and restoration--Germany--Potsdam.
Mendelsohn, Erich, 1887-1953.
Potsdam (Germany)--Buildings, structures, etc.
Harvard subject headings:
Astronomical observatories--Germany--Potsdam--Maintenance and repair.
Einstein Tower.
Historic buildings--Germany--Potsdam--Conservation and restoration.
Mendelsohn, Erich, 1887-1953.
Potsdam (Germany)--Buildings, structures, etc.
Princeton subject headings:
Astronomical observatories--Germany--Potsdam.
Einstein Tower.
Mendelsohn, Erich, 1887-1953--Criticism and interpretation.
Potsdam (Germany)--Buildings, structures, etc.