. Joseph Freiherr von Petrasch (czech: Josef Petráš) was a Croatian born, Austrian scholar who in 1746 founded the Societas incognitorum - an circle of scientist during the period of the Enlightment - in Olomouc, Moravia. He lived from 1714 until 1772. 18th century. Unknown 325 Joseph Petrasch

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Keywords: ., /, /., 18th, century., unknown.