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51. Magnetic Field - Secular Variation of the Inclination Component for the Epoch 2010.0
2010. National Geophysical Data Center. This shapefile shows lines of equal annual change (secular variation) in the inclination of the Earth's magnetic field, derived from the Internatio... National Atlas of the United States.
52. Magnetic Field - Secular Variation of the Total Field Component for the Epoch 2010.0
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation), in the total field intensity of the Earth's magnetic field, derived fro... National Atlas of the United States.
53. Magnetic Field - Secular Variation of the Vertical Component of the Total Field Intensity for the Epoch 2010.0
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the vertical component of the total field intensity of the Earth's ma... National Atlas of the United States.
54. Magnetic Field - Total Field Intensity for the Epoch 2010.0
2010. National Geophysical Data Center. This shapefile contains isodynamic lines (lines of equal total intensity of the Earth's magnetic field), derived from the International Geomagnetic... National Atlas of the United States.
55. Magnetic Field - Vertical Component of the Total Field Intensity for the Epoch 2010.0
2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.
56. North American Bat Ranges, 1830-2008
1830. National Atlas of the United States. This poygon shapefile portrays the distributions of United States and Canadian bat species during the past 100-150 years (1830-2009). The specimen ... National Atlas of the United States.
57. Topographic and Bathymetric Shaded Relief of North America
2005. National Atlas of the United States. The Topographic and Bathymetric Shaded Relief of North America map layer shows depth and elevation ranges using colors, with relief enhanced by sha... National Atlas of the United States.
58. Volcanoes: United States, 2004
2004. National Atlas of the United States. This point shapefile includes Holocene volcanoes, which are those thought to be active in the last 10,000 years, that are within an extended area o... National Atlas of the United States.
59. The north eastern coast of North America from New York to Cape Canso : including Sable Island
Blunt, Edmund M. (Edmund March), 1770-1862. Depths shown by soundings. "G. Ely, Sc't.; Eng'd by D.R. Harrison." Insets: Buzzards Bay drawn from the survey of Des Barres and information furnis... New York : E. & G.W. Blunt, 1828.
60. State and Province Areas, 1:50 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shape file depicts internal, first-order administrative boundaries for states and provinces of Australia, Brazil, Canada and the Unite... North American Cartographic Information Society.
61. State and Province Boundaries, 1:50 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shape file depicts internal, first-order administrative boundaries and polygons for states and provinces of Australia, Brazil, Canada... North American Cartographic Information Society.
62. State and Province Boundaries with Large Lakes, 1:50 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts internal, first-order administrative boundaries and polygons with large lakes for all but a few tiny countries. Incl... North American Cartographic Information Society.
63. States and Provinces with Scale Ranking, 1:50 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shape file depicts internal, first-order administrative boundaries for states and provinces of Australia, Brazil, Canada and the Unite... North American Cartographic Information Society.
64. A new and correct map of the United States, including great portions of Missouri Territory, Upper & Lower Canada, Nova Scotia, New Brunswick, the Floridas, Spanish Provinces &c.
Lewis, Samuel, 1753 or 1754-1822. Relief shown by hachures. Prime meridians: Greenwich and Philadelphia. Philad[elphi]a : Henry Charles, 1819.
65. North America (Electric Control Area Points, Dec. 2008)
Platts. The Control Area Points layer contains a schematic point representation of interconnected control areas. The point locations are for presentation o... Platts.
66. North America (Electric Control Areas, 2008)
Platts. The Platts Electric Control Areas geospatial data layer contains regions representing the geographic extent of utility control areas, derived from ... Platts.
67. North America (Electric Holding Company Service Territories, 2008)
Platts. The Platts Electric Holding Company Service Territories geospatial data layer contains regions representing the geographic extent of retail service... Platts.
68. North America (Electric Holding Company Service Territories, Dec. 2008)
Platts. The Platts Electric Holding Company Service Territories geospatial data layer contains regions representing the geographic extent of retail service... Platts.
69. North America (Electric Investor Owned Utility Service Territories, 2008)
Platts. The Platts Electric Investor Owned Utility (IOU) Service Territories geospatial data layer contains regions representing the geographic extent of r... Platts.
70. North America (Electric Investor Owned Utility Service Territories, Dec. 2008)
Platts. The Platts Electric Investor Owned Utility (IOU) Service Territories geospatial data layer contains regions representing the geographic extent of r... Platts.
71. North America (Electric Market Area Interconnections, Dec. 2008)
Platts. Schematic representation of interconnections among BaseCase market areas. See Quarterly Update for details. . Platts.
72. North America (Electric Market Area Points, Dec. 2008)
Platts. Points representing BaseCase market areas. Platts.
73. North America (Electric Market Areas, Dec. 2008)
Platts. The Platts Electric Market Areas geospatial data layer contains regions representing the geographic extent of electric price clearing markets. If ... Platts.
74. North America (Electric Market Areas, 2008)
Platts. The Platts Electric Market Areas geospatial data layer contains regions representing the geographic extent of electric price clearing markets. If ... Platts.
75. North America (Electric Non-Investor Owned Utility Service Territories, 2008)
Platts. The Platts Electric Non-Investor Owned Utility (NonIOU) Service Territories geospatial data layer contains regions representing the geographic exte... Platts.
76. North America (Electric Planning Areas, 2008)
Platts. The Platts Electric Planning Areas geospatial data layer contains regions representing the geographic extent of utility planning areas, derived fro... Platts.
77. North America (Electric Planning Areas, Dec. 2008)
Platts. The Platts Electric Planning Areas geospatial data layer contains regions representing the geographic extent of utility planning areas, derived fro... Platts.
78. North America (Electric Substations, 2008)
Platts. The Platts Electric Substation geospatial data layer contains point features representing electric transmission, sub-transmission, and some distrib... Platts.
79. North America (Electric Substations, Aug. 2008)
Platts. The Platts Electric Substation geospatial data layer contains point features representing electric transmission, sub-transmission, and some distrib... Platts.
80. North America (Electric Substations, Dec. 2008)
Platts. The Platts Electric Substation geospatial data layer contains point features representing electric transmission, sub-transmission, and some distrib... Platts.
81. North America (Electric Transmission Area Points, Dec. 2008)
Platts. Points representing BaseCase transmission areas. Platts.
82. North America (Electric Transmission Areas, 2008)
Platts. The Platts Electric Transmission Areas geospatial data layer contains regions representing the geographic extent of adjacent market areas whose flo... Platts.
83. North America (Electric Transmission Areas, Dec. 2008)
Platts. The Platts Electric Transmission Areas geospatial data layer contains regions representing the geographic extent of adjacent market areas whose flo... Platts.
84. North America Electric Transmission Lines, 2009
2009. Platts (Firm). Electric Transmission Lines is a polyline theme representing electric power lines of transmission and sub-transmission voltages covering North Amer... Platts.
85. North America (Electric Transmission Lines, Aug. 2008)
Platts. The Platts Transmission Lines geospatial data layer contains electric power lines of transmission and sub-transmission voltages covering North Amer... Platts.
86. North America (Electric Transmission Lines, Dec. 2008)
Platts. The Platts Transmission Lines geospatial data layer contains electric power lines of transmission and sub-transmission voltages covering North Amer... Platts.
87. North America (Energy Company Headquarters, 2008)
Platts. The Platts All Company Points geospatial data layer contains point features representing the North American company headquarters of electric, coal,... Platts.
88. North America ((ISO) Independent System Operator Zones, 2008)
Platts. The Platts Independent System Operator (ISO) Zones geospatial data layer contains regions representing the geographic extent of the wholesale power... Platts.
89. North America (ISO Nodal Pricing Points, Dec. 2008)
Platts. The Platts ISO Nodal Pricing Points geospatial data layer contains point features representing the North American nodal pricing locations. Platts.
90. North America ((LNG) Liquefied Natural Gas Import Terminals, 2008)
Platts. The Platts Liquefied Natural Gas (LNG) Import Terminals geospatial data layer contains point features representing locations in and around the Unit... Platts.
91. North America (Megawatt Daily Pricing Points, Aug. 2008)
Platts. The approximate location of all pricing points listed in Platts' Megawatt Daily publication. . Platts.
92. North America (Megawatt Daily Pricing Points, Dec. 2008)
Platts. The approximate location of all pricing points listed in Platts' Megawatt Daily publication. Platts.
93. North America (Megawatt Daily Pricing Points, Mar. 2008)
Platts. The approximate location of all pricing points listed in Platts' Megawatt Daily publication. . Platts.
94. North America (Natural Gas Holding Company Service Territories, 2008)
Platts. The Platts Natural Gas Holding Company Service Territories geospatial data layer contains regions representing the geographic extent of retail serv... Platts.
95. North America (Natural Gas Pipelines, 2008)
Platts. The Platts Natural Gas Pipelines geospatial data layer contains interstate and intrastate gas pipelines throughout North America. These pipelines ... Platts.
96. North America (Natural Gas Pipelines, Aug. 2008)
Platts. The Platts Natural Gas Pipelines geospatial data layer contains interstate and intrastate gas pipelines throughout North America. These pipelines ... Platts.
97. North America (Natural Gas Pipelines, Dec. 2008)
Platts. The Platts Natural Gas Pipelines geospatial data layer contains interstate and intrastate gas pipelines throughout North America. These pipelines ... Platts.
98. North America (Natural Gas Receipt and Delivery Points, 2008)
Platts. The Platts Natural Gas Receipt/Delivery Points geospatial data layer contains points that represent locations on interstate natural gas pipelines w... Platts.
99. North America (Natural Gas Utility Service Territories, 2008)
Platts. The Platts Natural Gas Utility Service Territories geospatial data layer contains regions representing the geographic extent of retail service prov... Platts.
100. North America (Natural Gas Utility Service Territories, Dec. 2008)
Platts. The Platts Natural Gas Utility Service Territories geospatial data layer contains regions representing the geographic extent of retail service prov... Platts.
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