Columbia subject headings:
Roerich, Nicholas, 1874-1947.
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Authors, Russian--20th century--Biography
Ivanov, Vs. N. (Vsevolod Nikanorovich)
Painters--Russia (Federation)--Biography.
Roerich, Nicholas, 1874-1947
Soviet Union--History--Revolution, 1917-1921--Personal narratives, Russian.
Soviet Union--History--Revolution, 1917-1921.
Princeton subject headings:
Ivanov, Vs. N. (Vsevolod Nikanorovich)
Roerich, Nicholas, 1874-1947.
Soviet Union--History--Revolution, 1917-1921--Personal narratives, Russian.