Columbia subject headings:
Architecture, Modern--20th century.
Architecture--Conservation and restoration.
Imaging systems in architecture.
Radiography, Industrial.
United Nations--Headquarters.
Weissenhofsiedlung (Stuttgart, Germany)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Modern--21st century
Architecture--Conservation and restoration
Imaging systems in architecture
Radiography, Industrial
United Nations--Headquarters.
Weissenhofsiedlung (Stuttgart, Germany)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Modern--20th century.
Architecture--Conservation and restoration.
Imaging systems in architecture.
Radiography, Industrial.
United Nations--Headquarters.
Weissenhofsiedlung (Stuttgart, Germany)--Buildings, structures, etc.