Jrisberg's profile

Joined about over 4 years ago.

Jrisberg's timelines

Henri Poincare 29 April 1854 - 17 July 1912
Henri Poincare 29 April 1854 - 17 July 1912 timeline
Bas van Fraassen 05 April 1941 - Present
Bas van Fraassen 05 April 1941 - Present timeline