Columbia subject headings:
Harvard subject headings:
Authors, Russian--20th century--History and criticism.
Children's literature, Russian--20th century--History and criticism.
Nature in literature.
Russian literature--20th century--History and criticism
Princeton subject headings:
Children's literature, Russian--History and criticism.
Nature in literature.
Prishvin, Mikhail Mikhaĭlovich, 1873-1954--Criticism and interpretation.
Russian literature--20th century--History and criticism.