Columbia subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Logic, Modern--19th century.
Logic.
Harvard subject headings:
Hegel, Georg Wilhelm Friedrich, 1770-1831--Contributions in logic.
Logic, Modern--19th century.
Princeton subject headings:
Categories (Philosophy)
Hegel, Georg Wilhelm Friedrich, 1770-1831. Wissenschaft der Logik. English
Time.