Author: S. P. Obnorskiĭ
Alternate names: Obnorskiĭ; S. P. Obnorskiĭ; S. P. Obnorskii; Sergei Petrovich Obnorskii; Sergeĭ Petrovich Obnorskiĭ; Sergey Obnorsky
Born: 1888
Died: 1962