Category:Peter Jacob Johannssen

**Peter Jacob Johannssen**
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Date of birth	20 April 1858; Trennewurth
Date of death	10 May 1941
Occupation	university teacher;
Employer	University of Bonn;
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	Q27123053; VIAF ID: 301260265; GND ID: 1034915509
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

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