Columbia subject headings:
Harvard subject headings:
Bolkhovskiĭ raĭon (Russia)--Genealogy.
Krivtsov family.
Mt︠s︡enskiĭ raĭon (Russia)--Genealogy.
Nobility--Russia (Federation)--Bolkhovskiĭ raĭon--Genealogy.
Nobility--Russia (Federation)--Mt︠s︡enskiĭ raĭon--Genealogy.
Nobility--Russia--Genealogy
Soviet Union--Genealogy.
Princeton subject headings:
Bolkhov (Russia)--Genealogy.
Bolkhov (Russia)--History.
Krivt︠s︡ovo (Bolkhovskiĭ raĭon, Russia)--Biography.
Krivt︠s︡ovo (Bolkhovskiĭ raĭon, Russia)--Genealogy.