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2. Analysis of oil spill trends in the United States and worldwide;Etkin,2001
3. Estimates of oil entering the marine environment from sea-based activities;GESAMP;GESAMP Reports and Studies,2007
4. Report of the working group on seabird ecology;ICES (International Council for the Exploration of the Sea),2005
5. Oil in the sea III: Inputs, fates, and effects;NAS (National Academy of Sciences),2003