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Date: 2012-01-19 10:40:01Electric aircraft AeroVironment RQ-11 Raven Sandhill crane Monte Vista National Wildlife Refuge Unmanned aerial vehicle | Monte Vista National Wildlife Refuge – Sandhill Cranes Population Estimates Using Small Unmanned Aircraft Systems March 20-25, 2011 The Department of the Interior – U.S. Geological Survey Raven RQ-11A Unmanned AircraAdd to Reading ListSource URL: uas.usgs.govDownload Document from Source WebsiteFile Size: 1,18 MBShare Document on Facebook |