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1. MassGIS 2000 Areas of Critical Environmental Concern (July 2000)

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2000. MassGIS (Office : Mass.). The Areas of Critical Environmental Concern (ACEC) datalayer shows the location of areas that have been designated ACECs by the Secretary of Enviro... Office of Geographic and Environmental Information (MassGIS).

6. MassGIS 2003 Massachusetts NHESP BioMap Core Habitat (July 2001)

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2001. MassGIS (Office : Mass.). Core Habitat is one of two datalayers resulting from the BioMap biodiversity mapping project (also see the NHESP BioMap Supporting Natural Landscap... Office of Geographic and Environmental Information (MassGIS).