Columbia subject headings:
Harvard subject headings:
Europe--Territorial expansion--History.
Geopolitics in literature.
May, Karl, 1842-1912--Criticism and interpretation.
Russia--Colonies--Asia.
Russia--Territorial expansion--History.
Princeton subject headings:
Asia, Central--History--19th century.
Asia, Central--History--20th century.
May, Karl, 1842-1912--Criticism and interpretation.
May, Karl, 1842-1912--Travel.
Russia--History--1801-1917.