2021 Relativity
2021 Relativity
Johannes Bierling(1878 - )
Geertruida Knoop(1886 - )
Nicolaas Bierling
b. 1921, Sawerd, Groningen
d. 19 Sep 1948, Groningen, Groningen
updated 3/27/21
copyright 2021 Jean Wisner Dupon