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Federal
Five-minute grid of marine bird biomass density off central California - Oceanic season, 1980-2001 (CDAS data set Oc0_mass.shp) recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Oc0_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq km) of 76 species of...