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| Shannon P. McPherron | Harold L. Dibble | |
| Department of Anthropology | Department of Anthropology | |
| George Washington University | University of Pennsylvania | |
| Washington, DC 20052 | Philadelphia, PA | |
| biface@gwu.edu | hdibble@sas.upenn.edu | |
| www.oldstoneage.com/shannon | http://ccat.sas.upenn.edu/~hdibble |