Columbia subject headings:
Railroad police--Russia--History.
Railroads--Russia--History.
Velikai︠a︡ Sibirskai︠a︡ magistralʹ.
Harvard subject headings:
Railroad police--Russia--History.
Railroads--Russia--History.
Velikai︠a︡ Sibirskai︠a︡ magistralʹ
Princeton subject headings: