Columbia subject headings:
Chechens--History--19th century--Statistics.
Chechni͡a (Russia)--History--19th century--Statistics.
Harvard subject headings:
Chechens--History--19th century--Statistics.
Chechni︠a︡ (Russia)--History--19th century--Statistics.
Princeton subject headings:
Chechens--History--Statistics.
Chechni︠a︡ (Russia)--History--19th century--Statistics.
Statistics.