Columbia subject headings:
Strikes and lockouts in literature.
Strikes and lockouts in motion pictures.
Strikes and lockouts--Coal mining--Belgium--Borinage--History.
Harvard subject headings:
Strikes and lockouts in literature.
Strikes and lockouts in motion pictures.
Strikes and lockouts--Coal mining--Belgium--Borinage--History.
Princeton subject headings:
Strikes and lockouts in literature.
Strikes and lockouts in motion pictures.
Strikes and lockouts--Coal mining--Belgium--Borinage--History.