Columbia subject headings:
Americans--Denmark--Attitudes.
Denmark--Civilization--Public opinion.
Public opinion--Denmark.
United States--Civilization--Public opinion.
Harvard subject headings:
Americans--Denmark--Attitudes.
Denmark--Civilization--Public opinion.
Public opinion--Denmark
United States--Civilization--Public opinion.
Princeton subject headings:
Americans--Denmark--Attitudes.
Denmark--Civilization--Public opinion.
Public opinion--Denmark.
United States--Civilization--Public opinion.