学科
- Eastern, Continental Airlines , Texas Air Corporation, etc.[删除]5
- Labor union members5
- Labor unions5
- I.A.M.A.W.4
- United University Professions (Association : N.Y.)4
- Labor union meetings3
- Protests3
- Signs and signboards3
- Strikes and lockouts2
- Banners1
- Flags1
- UUP Delegate Assembly Speaker1
- Walking1
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