full impact 2001 National Oceanic and Atmospheric Administration study http://www.afsc.noaa.gov/Quarterly/jas2001/feature_jas01.htm http://www.afsc.noaa.gov/Quarterly/jas2001/feature_jas01.htm The Exxon Valdez Oil Spill: How Much Oil Remains? http://www.afsc.noaa.gov/Quarterly/jas2001/feature_jas01.htm full impact www.afsc.noaa.gov/Quarterly/jas2001/feature_jas01.htm The Exxon Valdez Oil Spill: How Much Oil Remains? Alaska Fisheries Science Center The Exxon Valdez Oil Spill: How Much Oil Remains? 2001 National Oceanic and Atmospheric Administration study 2001 National Oceanic and Atmospheric Administration study study NOAA: How Much Oil Remains? The Exxon Valdez Oil Spill: How Much Oil Remains? The Exxon Valdez Oil Spill: How Much Oil Remains? study The Exxon Valdez Oil Spill: How Much Oil Remains? The Exxon Valdez Oil Spill: How Much Oil Remains? www.afsc.noaa.gov/Quarterly/jas2001/feature_jas01.htm Alaska Fisheries Science Center 2001 National Oceanic and Atmospheric Administration study 2001 National Oceanic and Atmospheric Administration study The Alaska Fisheries Oil Spill - How Much Oil Remains? The Exxon Valdez Oil Spill: How Much Oil Remains? NOAA: How Much Oil Remains? survey