Sam started following the work of Jonathan Clemens, University of Minnesota, History of Science, Technology and Medicine. 2012-03-27 09:33:49 -0700

Sam started following the work of Piers Hale, University of Oklahoma, History of Science. 2012-02-01 21:48:56 -0800

Sam started following the work of Mark Largent, Michigan State University, James Madison College. 2011-10-13 10:19:54 -0700