Columbia subject headings:
Harvard subject headings:
Giessen (Hesse, Germany)--Social conditions.
Labor movement--Germany--Giessen (Hesse)--History.
Labor unions--Germany--Giessen (Hesse)--History--Sources.
Labor unions--Germany--Giessen (Hesse)--History.
Princeton subject headings:
Giessen (Hesse, Germany)--Social conditions.
Labor movement--Germany (West)--Giessen (Hesse)--History.
Labor unions--Germany (West)--Giessen (Hesse)--History--Sources.
Labor unions--Germany (West)--Giessen (Hesse)--History.