Columbia subject headings:
Authors, Belarusian--20th century--Biography.
Kolas, I︠A︡kub, 1882-1956.
Harvard subject headings:
Authors, Belarusian--20th century--Biography.
Kolas, I︠A︡kub, 1882-1956
Princeton subject headings:
Kolas, I︠A︡kub, 1882-1956--Chronology.