Columbia subject headings:
Poets, Russian--20th century--Biography.
Severi︠a︡nin, Igorʹ.
Harvard subject headings:
Poets, Russian--20th century--Biography
Severi︠a︡nin, Igorʹ
Severi︠a︡nin, Igorʹ--History and criticism.
Princeton subject headings:
Poets, Russian--20th century--Biography.
Severi︠a︡nin, Igorʹ.