Columbia subject headings:
Architecture, Modern--20th century--Philosophy.
Architecture, Modern--20th century.
Architecture, Modern--21st century--Philosophy.
Architecture, Modern--21st century.
Harvard subject headings:
Architecture, Modern--20th century--Philosophy
Architecture, Modern--21st century
Architecture, Modern--21st century--Philosophy.
Princeton subject headings:
Architecture, Modern--20th century--Philosophy.
Architecture, Modern--20th century.
Architecture, Modern--21st century--Philosophy.
Architecture, Modern--21st century.