Wim Ruska was born in 1940.
Julius Ruska was born in 1867.
Helmut Ruska was born in 1908.
Ernst Ruska was born on December 25, 1906.
Ernst Ruska was born on December 25, 1906.
Wim Zaal was born in 1935.
Wim Schokking was born in 1900.
Wim Boost was born in 1918.
Wim Vriend was born in 1941.
Wim Cool was born in 1943.
Wim Klever was born in 1930.
Wim Gijsen was born in 1933.
Wim Schuhmacher was born in 1894.