Robert J. Speakman
Smithsonian Institution, Suitland, MD
Activity
2009
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A TWELVE THOUSAND YEAR HISTORY OF OBSIDIAN PROSPECTING IN EASTERN BERINGIA
T262 Obsidian from Magma to Artifact: Geological and Archaeological Perspectives (Posters)Wednesday, 21 October 20099:00 AM - 6:00 PMHall A
2007
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GEOCHEMICAL STUDY OF URBAN ENVIRONMENTS WITH EXCESS DISEASE PREVALENCE: FALLON, NEVADA
T19 Medical GeologySunday, 28 October 20078:00 AM - 12:00 PM