Columbia subject headings:
Ėrdman, Nikolaĭ, 1902-1970--Criticism and interpretation.
Ėrdman, Nikolaĭ, 1902-1970--Stage history--Germany.
Harvard subject headings:
Ėrdman, Nikolaĭ, 1902-1970--Criticism and interpretation.
Ėrdman, Nikolaĭ, 1902-1970--Stage history--Germany.
Princeton subject headings:
Ėrdman, Nikolaĭ, 1902-1970--Criticism and interpretation.
Ėrdman, Nikolaĭ, 1902-1970--Stage history--Germany.