Columbia subject headings:
Harvard subject headings:
Akademie für Gemeinwirtschaft Hamburg--History.
Socialism and education--Germany--Hamburg--History--20th century.
Universities and colleges--Germany--Hamburg--History--20th century.
Princeton subject headings:
Akademie für Gemeinwirtschaft Hamburg--History.
Socialism and education--Germany--Hamburg--History--20th century.
Universities and colleges--Germany--Hamburg--History--20th century.