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41. County Boundaries of the United States, 2000

2000. Geological Survey (U.S.). This polygon shapefile portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

42. County Boundaries with Politicial Limit: United States and Territories, 2014

2014. United States. Bureau of Transportation Statistics. This polygon shapefile contains United States county boundaries with political limits extracted from the U.S. Census Bureau's MAF/TIGER Database (M... United States. Bureau of Transportation Statistics.

43. Curac̦ao

Vandermaelen, Philippe, 1795-1869. From: From Atlas universel de geographie physique, politique, statistique et minéralogique, sur l'echelle de 1:1641836 ... / dressé par Ph. Vande... [Bruxelles : Ph. Vandermaelen, 1827].

44. Fault Lines: Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005

2005. Reed, John Calvin, Jr. 1930- and Bush, Charles A. This line shapefile represents major fault lines in Alaska. This map complements the Generalized Geologic Map of the Conterminous United States by ... Geological Survey (U.S.).

45. Fault Lines with Line Decorations: Generalized Geologic Map of Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands, 2005

2005. Reed, John Calvin, Jr. 1930- and Bush, Charles A. This line shapefile represents major fault lines with line decorations (added for display purposes) in Alaska. This map complements the Generalized... Geological Survey (U.S.).

46. Federal Lands of the United States, 2006

1972. National Atlas of the United States. This polygon shapefile contains federally owned or administered lands of the United States, Puerto Rico, and the U.S. Virgin Islands. Only areas of... National Atlas of the United States.

47. Fees and Easements, LCC 22, Protected Areas Database of the United States, 2005-2016

2005. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Fee and Easements features for Landscape Conservation Cooperative (LCC) 22. The USGS Protected Area... Gap Analysis Program (U.S.).

48. Fees and Easements, Puerto Rico, Protected Areas Database of the United States, 2005-2016

2005. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Fee and Easements features for Puerto Rico. The USGS Protected Areas Database of the United States ... Gap Analysis Program (U.S.).

49. First-level Administrative Divisions, Puerto Rico, 2015

Hijmans, Robert J. and University of California, Berkeley. Museum of Vertebrate Zoology. This polygon shapefile contains the first-level administrative divisions of Puerto Rico (adm1). Level 1 divisions include municipalities. This laye... University of California, Berkeley. Museum of Vertebrate Zoology.

50. Forest Cover Types, United States, 2002

2002. United States. Forest Service and Geological Survey (U.S.). This raster layer portrays general forest cover types for the United States in GeoTIFF format. Data were derived from Advanced Very High Resolution... National Atlas of the United States.