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Date: 2013-11-14 08:37:21 | How the western frontiers were won with the help of geophysics J. G. Smith1 and H. K. Weston2,* [1]{Institute for Historical Geophysics, Houston, Texas}Add to Reading ListSource URL: www.climate-of-the-past.netDownload Document from Source WebsiteFile Size: 75,50 KBShare Document on Facebook |