Columbia subject headings:
Grigorʹev, Apollon Aleksandrovich, 1822-1864--Correspondence.
Harvard subject headings:
Authors, Russian--19th century--Correspondence
Grigorʹev, Apollon Aleksandrovich, 1822-1864--Correspondence.
Princeton subject headings:
Grigorʹev, Apollon Aleksandrovich, 1822-1864--Correspondence.