Columbia subject headings:
Labor mobility--Soviet Union.
Manpower policy--Soviet Union.
Urban policy--Soviet Union.
Harvard subject headings:
Labor mobility--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ)
Migration, Internal--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ)
Princeton subject headings:
Labor mobility--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ).
Migration, Internal--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ).