Columbia subject headings:
Harvard subject headings:
Blok, Aleksandr Aleksandrovich, 1880-1921
Brugaev, Boris Nikolaevich, 1880-1934.
Solovyov, Vladimir Sergeyevich, 1853-1900--Influence--Blok.
Solovyov, Vladimir Sergeyevich, 1853-1900--Influence--Brugaev.
Princeton subject headings:
Bely, Andrey, 1880-1934.
Blok, Aleksandr Aleksandrovich, 1880-1921.
Solovyov, Vladimir Sergeyevich, 1853-1900--Influence--Bely.
Solovyov, Vladimir Sergeyevich, 1853-1900--Influence--Blok.