Revision History for USGS Professional Paper 1784-A David W. Houseknecht, Kenneth J. Bird, and Paul O'Sullivan Constraining the Age and Magnitude of Uplift in the Northern National Petroleum Reserve in Alaska (NPRA)-- Apatite Fission-Track Analysis of Samples from Three Wells ----------------------------------------------------- Posted online at http://pubs.usgs.gov/pp/1784/a/ August 9, 2011 -----------------------------------------------------