File:Gebrueder Gravenhorst.jpg

DescriptionGebrueder Gravenhorst.jpg	Deutsch: Johann Heinrich Gravenhorst (1719−1781) und Christoph Julius Gravenhorst (1731−1794), deutsche Chemiker und Unternehmer, Braunschweig. English: Johann Heinrich Gravenhorst (1719−1781) and Christoph Julius Gravenhorst (1731−1794), chemists and entrepreneurs, Brunswick, Germany.
Date	1780
Source	Johann Georg Krünitz: Oekonomische Encyklopädie, Band 19, Verlag Joachim Pauli, Berlin 1780.
Author	Johann Georg Krünitz (1728−1796)
Other versions	Derivative works of this file:  Johann Heinrich Gravenhorst.jpg:  Derivative works of this file:  Christoph Julius Gravenhorst.jpg:

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• 2011-10-08 10:13 Rilegator 509×761× (377318 bytes) {{Information |Beschreibung = [[Johann Heinrich Gravenhorst]] (1719−1781) und [[Christoph Julius Gravenhorst]] (1731−1794), deutsche Chemiker und Unternehmer, Braunschweig. |Quelle = Johann Georg Krünitz: Oekonomische Encyklopädie, Band 19, Verlag Joachim Pauli, Berlin 1780. |Urheber = [[Johann Georg Krünitz]] (1728−1796) |Datum = 1780 |Genehmigung = |Andere Versionen = |Anmerkungen = }}