Columbia subject headings:
Architecture--Philosophy.
Engelmann, Paul, 1891-1965--Criticism and interpretation.
Language and languages--Philosophy.
Harvard subject headings:
Architecture--Philosophy--Congresses
Engelmann, Paul, 1891-1965--Criticism and interpretation--Congresses.
Language and languages--Philosophy--Congresses
Princeton subject headings:
Architecture--Philosophy.
Engelmann, Paul, 1891-1965--Criticism and interpretation.
Language and languages--Philosophy.