Pietro de Crescenzi, Ruralia commoda, ca. 1490-1495. Image courtesy of the University of Toronto.
Tuesday, January 31, 2012, 5:00 pm EST
Chemical Heritage Foundation, Brown Bag Lecture
Saturday, January 28, 2012, 2:00 pm EST
New Jersey State Museum
Wednesday, January 25, 2012, 10:00 pm EST
Penn Humanities Forum
Wednesday, January 25, 2012, 4:00 pm EST
Tuesday, January 24, 2012, 5:00 pm EST
Chemical Heritage Foundation, Brown Bag Lecture
Thursday, January 19, 2012, 11:30 pm EST
Philadelphia Area Center for History of Science, the Franklin Institute, and the Academy of Natural Sciences
Thursday, January 19, 2012, 11:00 pm EST
Philadelphia Area Seminar on the History of Mathematics, Villanova University
Wednesday, January 18, 2012, 5:00 pm EST
Barbara Bates Center for the Study of the History of Nursing, University of Pennsylvania
Wednesday, January 18, 2012, 4:45 pm EST
Tuesday, December 13, 2011, 5:00 pm EST
Chemical Heritage Foundation, Brown Bag Lecture
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