Columbia subject headings:
Zamoĭskiĭ, Petr, 1896-1958--Correspondence.
Zamoĭskiĭ, Petr, 1896-1958.
Harvard subject headings:
Authors, Russian--20th century--Biography
Zamoĭskiĭ, Petr, 1896-1958.
Princeton subject headings:
Zamoĭskiĭ, Petr, 1896-1958--Correspondence.
Zamoĭskiĭ, Petr, 1896-1958.