Columbia subject headings:
Culture diffusion--Europe.
Culture diffusion--United States.
Harvard subject headings:
Cross-cultural studies--Congresses.
Culture diffusion--Europe--Congresses.
Culture diffusion--United States--Congresses.
Popular culture--Europe--Congresses.
Popular culture--United States--Congresses.
Princeton subject headings:
Culture diffusion--Europe.
Culture diffusion--United States.