Columbia subject headings:
Harvard subject headings:
History--Study and teaching--Europe.
History--Study and teaching--Japan
History--Study and teaching--United States
Textbook bias--Europe.
Textbook bias--Japan.
Textbook bias--United States.
Princeton subject headings:
History--Study and teaching--Europe.
History--Study and teaching--Japan.
History--Study and teaching--United States.
Textbook bias--Europe.
Textbook bias--Japan.
Textbook bias--United States.