JGuthrie's profile

Joined about over 4 years ago.

JGuthrie's timelines

ERNST MACH FEB 18, 1838 - FEB 19, 1916
ERNST MACH FEB 18, 1838 - FEB 19, 1916 timeline
THOMAS KUHN JULY 18, 1922 – JUNE 17, 1996
THOMAS KUHN JULY 18, 1922 – JUNE 17, 1996 timeline