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2021 Relativity
2021 Relativity
Jan Balthasar van der Upwich
(15 Jun 1763 - 8 Jan 1829)
Sara van der Burgh
( - bef 1793)
Gerard Christiaan van der Upwich
b.
6 Apr 1785, Amsterdam, NH
d.
updated 3/27/21
copyright 2021 Jean Wisner Dupon