Columbia subject headings:
Blok, Aleksandr Aleksandrovich, 1880-1921--Criticism and interpretation.
Iwaszkiewicz, Jarosław, 1894-1980--Criticism and interpretation.
Harvard subject headings:
Blok, Aleksandr Aleksandrovich, 1880-1921--Criticism and interpretation.
Iwaszkiewicz, Jarosław, 1894-1980--Criticism and interpretation.
Princeton subject headings:
Blok, Aleksandr Aleksandrovich, 1880-1921--Criticism and interpretation.
Iwaszkiewicz, Jarosław, 1894-1979--Criticism and interpretation.