Columbia subject headings:
Germany--Social conditions--Longitudinal studies.
Political participation--Germany--History--Longitudinal studies.
Social mobility--Germany--History--Longitudinal studies.
Strikes and lockouts--Germany--History--Case studies.
Working class--Political activity--Germany--History--Case studies.
Harvard subject headings:
Germany--Social conditions--Longitudinal studies.
Political participation--Germany--History--Longitudinal studies.
Social mobility--Germany--History--Longitudinal studies.
Strikes and lockouts--Germany--History--Case studies.
Working class--Germany--Political activity--History--Case studies.
Working class--Political activity--Germany--History--Case studies.
Princeton subject headings:
Germany--Social conditions--Longitudinal studies.
Industries--Social aspects--Germany.
Political participation--Germany--History.
Social mobility--Germany--History.
Working class--Germany--Political activity--History.