Columbia subject headings:
Poets, Chuvash--20th century--Biography.
Ukhsaĭ, I︠A︡kov--Correspondence.
Ukhsaĭ, I︠A︡kov.
Harvard subject headings:
Poets, Chuvash--20th century--Biography.
Ukhsaĭ, I͡Akov--Correspondence.
Ukhsaĭ, I͡Akov.
Princeton subject headings:
Poets, Chuvash--20th century--Biography.
Ukhsaĭ, I︠A︡kov--Correspondence.
Ukhsaĭ, I︠A︡kov.