Columbia subject headings:
Keller, Gottfried, 1819-1890--Criticism and interpretation.
Meyer, Conrad Ferdinand, 1825-1898--Criticism and interpretation.
Harvard subject headings:
Keller, Gottfried, 1819-1890--Criticism and interpretation.
Meyer, Conrad Ferdinand, 1825-1898--Criticism and interpretation.
Princeton subject headings:
Keller, Gottfried, 1819-1890--Criticism and interpretation.
Meyer, Conrad Ferdinand, 1825-1898--Criticism and interpretation.