Vorlesungen über die Philosophie der Natur : Berlin 1825/26 / Georg Wilhelm Friedrich Hegel ; nachgeschrieben von Heinrich Wilhelm Dove ; herausgegeben von Karol Bal ... [and others].
Vorlesungen / George Wilhelm Friedrich Hegel ; Bd. 17 Hegel, Georg Wilhelm Friedrich, 1770-1831. Lectures. Selections ; Bd. 17. http://id.loc.gov/authorities/names/n83730203
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