Hs 797 Berchtold, Heinrich (1844-1907) : Vorlesungsnachschriften aus der Studienzeit an der Mechanisch-Technischen Schule des Eidgenössischen../Nachschriften und Ausarbeitungen aus dem Ingenieurstudium
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Reference
Berchtold, Heinrich: Aufgaben aus der theoretischen Maschinenlehre, unterrichtet von Gustav Anton Zeuner, für Heinrich Berchtold. 1861-1862 oder 1862-1863. ETH-Bibliothek Zürich, Hs 797:11, https://doi.org/10.7891/e-manuscripta-812 / Public Domain Mark