jrkenna's profile

Joined about about 5 years ago.

jrkenna's timelines

Charles Darwin: February 12, 1809 - April 19, 1882
Charles Darwin: February 12, 1809 - April 19, 1882 timeline
Thomas Kuhn: July 18, 1922 - June 17, 1996
Thomas Kuhn: July 18, 1922 - June 17, 1996 timeline