You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Data type Polygon Remove constraint Data type: Polygon Format Shapefile Remove constraint Format: Shapefile Year 1972 Remove constraint Year: 1972
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.).