Columbia subject headings:
Asia--Discovery and exploration--Russian--Congresses.
Explorers--Russia--History--Congresses.
Germans--Russia--History--Congresses.
Orient--Discovery and exploration--Russian--Congresses.
Russian Germans--History--Congresses.
Harvard subject headings:
Asia--Discovery and exploration--Russian--Congresses.
Explorers--Russia--History--Congresses.
Germans--Russia--History--Congresses.
Russian Far East (Russia)--Discovery and exploration--German--Congresses.
Russian Germans--History--Congresses.
Princeton subject headings:
Asia--Discovery and exploration--Russian--Congresses.
Explorers--Russia--History--Congresses.
Germans--Russia--History--Congresses.
Orient--Discovery and exploration--Russian--Congresses.
Russian Germans--History--Congresses.