ken.m.cross@gmail.com's profile

Joined about about 3 years ago.

ken.m.cross@gmail.com's timelines

Charles Darwin - 12 February 1809 - 19 April 1882
Charles Darwin - 12 February 1809 - 19 April 1882 timeline
Thomas Kuhn - 1922-1996
Thomas Kuhn - 1922-1996 timeline