Columbia subject headings:
T︠S︡vetaeva, Marina, 1892-1941--Family.
Ėfron, Georgiĭ, 1925-1944?--Correspondence.
Harvard subject headings:
Ėfron, Georgiĭ, 1925-1944?--Correspondence.
T︠S︡vetaeva, Marina, 1892-1941--Biography--Family.
Princeton subject headings:
Ėfron, Georgiĭ, 1925-1944?--Correspondence.
Poets, Russian--20th century--Biography.
T︠S︡vetaeva, Marina, 1892-1941--Family.