Columbia subject headings:
Pushkin, Aleksandr Sergeevich, 1799-1837--Friends and associates.
Harvard subject headings:
Pushkin, Aleksandr Sergeevich, 1799-1837--Friends and associates.
Princeton subject headings:
Pushkin, Aleksandr Sergeevich, 1799-1837--Friends and associates.
Russia--Intellectual life--1801-1917.