Columbia subject headings:
Philosophy of nature--Congresses.
Philosophy, German--Congresses.
Harvard subject headings:
Fichte, Johann Gottlieb, 1762-1814.
Hegel, Georg Wilhelm Friedrich, 1770-1831
Kant, Immanuel, 1724-1804
Philosophy of nature--Congresses
Philosophy, German--18th century--Congresses.
Philosophy, German--Congresses.
Schelling, Friedrich Wilhelm Joseph von, 1775-1854
Princeton subject headings:
Philosophy of nature--Congresses.
Philosophy, German--Congresses.