HeadingGravenhorst, Johann H. used in: Common Library Network (GBV), Göttingen (Germany)
Gravenhorst, Johann Heinrich used in: Integrated Authority File (GND), Germany
Variant NameGravenhorst
Sources
Found inNDB/ADB-online
Johann Heinrich Gravenhorst (1719–1781), chemist and entrepreneur, Brunswick, Germany. [Johann Georg Krünitz (1728–1796) / Johann Georg Krünitz: Oekonomische Encyklopädie, Band 19, Verlag Joachim Pauli, Berlin 1780. -- Public domain -- http://commons.wikimedia.org/wiki/File:Johann Heinrich Gravenhorst.jpg]