Title: Workers' world
Subjects: Emigration and immigration, History, Labor unions, Social conditions, Working class, Syndicats, Travailleurs, Émigration et immigration, Conditions sociales, Histoire, Arbeidersklasse, Arbeiter, Industrialization, Working class--history, Working class--pennsylvania--history--20th century, Labor unions--history, Labor unions--pennsylvania--history--20th century, Emigration and immigration--history, Hd8083.p43 b6 1982
Places: Pennsylvania
Time periods: 20th century