Columbia subject headings:
Harvard subject headings:
Civilization, Modern--1950---Congresses
Human beings--Effect of environment on--Congresses
Human territoriality--Congresses.
Place (Philosophy)--Congresses.
Princeton subject headings:
Civilization, Modern--1950---Congresses.
Human beings--Effect of environment on--Congresses.
Human territoriality--Congresses.
Place (Philosophy)--Congresses.