Columbia subject headings:
Federolʹf, Ada, 1901-1996.
Ėfron, Ariadna, 1912-1975.
Harvard subject headings:
Federolʹf, Ada, 1901-1996--Biography.
Ėfron, Ariadna, 1912-1975--Biography.
Princeton subject headings:
Ėfron, Ariadna, 1913-1975.
Poets, Russian--20th century--Biography.
T︠S︡vetaeva, Marina, 1892-1941--Family.