Bisack KD 2003 Estimates of marine mammal bycatch in the Northeast (New England) multispecies sink gillnet fishery in 1996 Northeast Fish Sci Cent Ref Doc 03-18; 21 p https://repository.library.noaa.gov/view/noaa/5336 Bisack Kathryn D Division Resource Evaluation & Assessment READ Social Sciences Secondary NEFSC Ref or Lab Document Reports