Terrestrial Radioactivity and Gamma-ray Exposure in the United States and Canada

U.S. Geological Open-File Report 2005-1413

by

Joseph S. Duvala, John M. Carsonb, Peter B. Holmanb, and Arthur G. Darnleyb

a U.S. Geological Survey

   Reston, Virginia

   United States

b Geological Survey of Canada

   Ottawa, Ontario

   Canada

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U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2005/1413/TitlePage.htm
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