Columbia subject headings:
Harvard subject headings:
Education--Austria--History--Congresses.
Education--Germany, Southern--History--Congresses.
Education--Switzerland--History--Congresses.
Youth movements--Austria--History--Congresses.
Youth movements--Germany, Southern--History--Congresses.
Princeton subject headings:
Education--Austria--History--Congresses.
Education--Germany, Southern--History--Congresses.
Education--Switzerland--History--Congresses.
Youth movements--Austria--History--Congresses.
Youth movements--Germany, Southern--History--Congresses.