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21. Global 4G Mobile Communications Network Coverage, 2011

2011. Collins Bartholomew Ltd. This polygon shapefile is a representation of the coverage area for 4G mobile communications networks around the world in 2011. The data is created... Collins Bartholomew Ltd.

22. Hydrographic Features (Polygons): United States and Territories, 2011

2011. United States. Bureau of the Census. Geography Division and United States. Bureau of Transportation Statistics. This polygon shapefile depicts hydrography coverages that were created using TIGER/Line 2000 shapefile data gathered from ESRI's Geography Network.... United States. Bureau of Transportation Statistics.

23. Income Map: Districts of India 2011-2012

2011. ML InfoMap (Firm). This polygon shapefile shows estimates of income and savings for all districts and wards of major cities in India for 2011-2012. This map includes ... ML InfoMap (Firm).

24. Inland Waters, Kosovo, 2011

2011. International Steering Committee for Global Mapping and Kosovo Cadastral Agency. This polygon shapefile represents inlands waters in Kosovo. The Global Map Republic of Kosovo version 2.0 Boundary layer was developed using the o... International Steering Committee for Global Mapping.

25. Inland Waters, Latvia, 2011

2011. International Steering Committee for Global Mapping and Latvian Geospatial Information Agency. This polygon shapefile represents inlands waters in Latvia. The Global Map Latvia - Boundaries layer accuracy corresponds to scale 1:500 000. Boun... International Steering Committee for Global Mapping.

26. Kelp Canopy: Southern California, 2011

2011. Naval Air Systems Command (NAVAIR), Ocean Imaging, Corp., and California Department of Fish and Wildlife. This polygon shapefile depicts the 2011 aerial kelp survey that was created from Digital Multi-Spectral Camera image files. The data was collected ... California. Department of Fish and Game. Marine Resources Region.

27. Landscape Units: San Francisco Bay Area, California, 2011

2011. Bay Area Open Space Council, San Francisco Bay Area Upland Habitat Goals Project, Conservation Lands Network, and GreenInfo Network (Firm). This polygon shapefile depicts the division of the nine county San Francisco Bay Area Region, California into 34 landscape units, or subregions, to... Bay Area Open Space Council.

28. Late Wisconsin Glaciers, Alaska Palaeo-Glacier Atlas

2011. World Data Center for Paleoclimatology and NOAA Paleoclimatology Program (U.S.). This line shapefile represents the extent of glaciers during the late Wisconsin glaciation (also known as the Last Glacial Maximum, about 20,000 ye... World Data Center for Paleoclimatology.

29. Lead (Pb): Federal Area Designations: California, 2011

2011. United States. Environmental Protection Agency. This polygon shapefile contains area designations of lead attainment (Pb) in California (Region 9). There are three categories of designations: : n... United States. Environmental Protection Agency. Region IX.

30. Metropolitan Planning Boundaries: United States and Territories, 2011

2011. United States. Federal Highway Administration and United States. Bureau of Transportation Statistics. This polygon shapefile contains United States metropolitan planning boundaries. The United States Metropolitan Planning Organization (MPO) Database... United States. Bureau of Transportation Statistics.