Columbia subject headings:
Harvard subject headings:
Battles--Turkey--Erzurum--History.
Erzurum (Turkey)--History--19th century.
Russia--Foreign relations--Turkey--19th century.
Russo-Turkish War, 1877-1878--Campaigns--Turkey, Eastern.
Turkey--Foreign relations--Russia--19th century.
Princeton subject headings:
Battles--Turkey--Erzurum--History.
Erzurum (Turkey)--History.
Russo-Turkish War, 1877-1878--Campaigns--Turkey, Eastern.