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61. Shellfish Habitats for Maine, Massachusetts, and New Hampshire, 1975-2013
1975. Nature Conservancy (U.S.). This shellfish habitat layer was derived from datasets from Maine, Massachusetts and New Hampshire state GIS resources. Shapefiles downloaded/provi... Northeast Ocean Data.
62. Shellfish Management Areas, Northeastern United States, 2013
2013. Maine. Department of Marine Resources. This polygon shapefile represents shellfish growing and classification areas for states in the northeastern U.S. including Connecticut, Maine, Mass... Northeast Ocean Data.
63. State Boundaries of the United States, 2005
1972. Geological Survey (U.S.). This polygon shapefile portrays the state boundaries of the United States, and the boundaries of Puerto Rico and the U.S. Virgin Islands. The map l... Geological Survey (U.S.).
64. States, Northeast United States, 2007
2007. U.S. Census Bureau. Geography Division and United States. Department of Commerce. This polygon shapefile contains state boundaries for the Northeastern United States The TIGER/Line Files are shapefiles and related database files ... United States. National Ocean Service.
65. Time Zones of the United States, 2005
1972. National Atlas of the United States. This polygon shapefile portrays the time zones of the United States, Puerto Rico, and the U.S. Virgin Islands. Also included are the Greenwich Mean... National Atlas of the United States.