Columbia subject headings:
Harvard subject headings:
Borderlands--Russia (Federation)--Transbaikalia--Congresses.
Mongolia--Foreign relations--Russia (Federation)--Congresses.
Russia (Federation)--Foreign relations--Mongolia--Congresses.
Princeton subject headings:
Borderlands--Russia (Federation)--Transbaikalia--Congresses.
Mongolia--Foreign relations--Russia (Federation)--Congresses.
Russia (Federation)--Foreign relations--Mongolia--Congresses.