Columbia subject headings:
Harvard subject headings:
Criticism--Germany--Bibliography.
Twain, Mark, 1835-1910--Appreciation--Germany--Bibliography.
Twain, Mark, 1835-1910--Bibliography.
Princeton subject headings:
Criticism--Germany--Bibliography.
Twain, Mark, 1835-1910--Appreciation--Germany--Bibliography.
Twain, Mark, 1835-1910--Bibliography.