Title: Pervai︠a︡ Petrogradskai︠a︡ gubernskai︠a︡ konferent︠s︡ii︠a︡ professionalʹnykh soi︠u︡zov i fabrichno-zavodskikh komitetov, 11-13 sent. 1919 g.
Subjects: Labor unions, Congresses
Places: Russia (Federation), Saint Petersburg, Soviet Union