Columbia subject headings:
Labor movement--Russia (Federation)--Novgorodskai︠a︡ oblastʹ--History--Sources.
Labor--Russia (Federation)--Novgorodskai︠a︡ oblastʹ--History--Sources.
Novgorodskai︠a︡ oblastʹ (Russia)--Politics and government--1917-1936--Sources.
Working class--Russia (Federation)--Novgorodskai︠a︡ oblastʹ--History--Sources.
Harvard subject headings:
Labor--Russia (Federation)--Novogorodskai︠a︡ oblastʹ--History--Sources.
Novgorodskai︠a︡ oblastʹ (Russia)--Politics and government--1917-1936--Sources.
Working class--Russia (Federation)--Novogorodskai︠a︡ oblastʹ--History--Sources.
Princeton subject headings: