Columbia subject headings:
Krivt͡sov, N. I. (Nikolaĭ Ivanovich)
Russia--History--December Uprising, 1825.
Harvard subject headings:
Decembrists--Biography.
Krivt︠s︡ov, Nikolaĭ Ivanovich, 1791-1843.
Princeton subject headings:
Krivt︠s︡ov, Nikolaĭ Ivanovich, d. 1843
Krivt︠s︡ov, Pavel Ivanovich
Krivt︠s︡ov, Sergeĭ Ivanovich, d. 1864