Columbia subject headings:
Solovyov, Vladimir Sergeyevich, 1853-1900.
Steiner, Rudolf, 1861-1925.
Harvard subject headings:
Solovyov, Vladimir Sergeyevich, 1853-1900
Steiner, Rudolf, 1861-1925
Princeton subject headings:
Solovyov, Vladimir Sergeyevich, 1853-1900.
Steiner, Rudolf, 1861-1925.