Columbia subject headings:
Austria--History--Study and teaching--Austria.
Austria--History--Textbooks.
Education--Austria.
Textbook bias--Austria.
Harvard subject headings:
Austria--History--Study and teaching--Austria.
Austria--History--Textbooks.
Education--Austria
Textbook bias--Austria.
Princeton subject headings:
Austria--History--Study and teaching--Austria.
Austria--History--Textbooks.
Education--Austria.
Textbook bias--Austria.