Columbia subject headings:
Leningradskai︠a︡ oblastʹ (Russia)--Antiquities--Congresses.
Russia (Federation)--Antiquities--Congresses.
Harvard subject headings:
Excavations (Archaeology)--Russia (Federation)--Leningradskai︠a︡ oblastʹ--Congresses.
Leningradskai︠a︡ oblastʹ (Russia)--Antiquities--Congresses.
Russia (Federation)--Antiquities--Congresses.
Princeton subject headings:
Leningradskai︠a︡ oblastʹ (Russia)--Antiquities--Congresses.
Russia (Federation)--Antiquities--Congresses.