Columbia subject headings:
City planning--Congresses.
International Congresses for Modern Architecture (4th : 1933 : Athens, Greece) Athens charter.
Harvard subject headings:
City planning--Congresses
International Congress for Modern Architecture (4th : 1933 : Athens, Greece). Athens charter.
International Congresses for Modern Architecture (4th : 1933 : Athens, Greece) Athens charter.
Princeton subject headings:
City planning--Congresses.
International Congresses for Modern Architecture (4th : 1933 : Athens, Greece) Athens charter