Columbia subject headings:
Harvard subject headings:
Bohr, Niels, 1885-1962.
Goethe, Johann Wolfgang von, 1749-1832--Criticism and interpretation.
Philosophy of nature.
Princeton subject headings:
Bohr, Niels, 1885-1962.
Goethe, Johann Wolfgang von, 1749-1832--Criticism and interpretation.
Philosophy of nature.