August Fredrik Gerhard (*29.10.1846 Westzaan/Nord-Holland) war ein Studienfreund von Wilhelm Conrad Röntgen
Quelle: openarchives, genealogical data in dutch and belgian archives (www.openarch.nl)
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August Fredrik Gerhard (*29.10.1846 Westzaan/Nord-Holland) war ein Studienfreund von Wilhelm Conrad Röntgen
Quelle: openarchives, genealogical data in dutch and belgian archives (www.openarch.nl)
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