File 35108 is a 6.5MB PowerPoint 2007 (.pptx) Uploaded:
Jul16 12 Last Modified: 2012-07-16 08:32:57 https://serc.carleton.edu/download/files/35108/exercise_history_n_america.pptx
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Workshop program http://serc.carleton.edu/NAGTWorkshops/structure/SGT2012/program.html
Provenance Steve Wojtal, Oberlin College
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