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31. Public Land Survey System of the United States, 2010

2010. Geological Survey (U.S.). This polygon shapefile portrays the Public Land Surveys of the United States, including areas of private survey, donation land claims, and land gra... Geological Survey (U.S.).

32. Quaternary Fault and Fold Database of the United States (Polygons)

2005. Geological Survey (U.S.). This map layer contains locations and information on faults and associated folds, in the United States, that are believed to be sources of signific... National Atlas of the United States.

33. Seismic Hazard Map for the United States

2012. Rukstales, Kenneth S. (compiler). This polygon shapefile represents seismic hazards in the United States. The data represent a model showing the probability that ground motion will ... National Atlas of the United States.

34. Spread of Africanized Honey Bees in the United States, 1990-2005

1990. United States. Agricultural Research Service. This polygon shapefile portrays the spread, by year, of the Africanized honey bee (AHB) in the United States, Puerto Rico, and the U.S. Virgin Isla... National Atlas of the United States.

35. State Boundaries of the United States, 2005

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.).

36. Time Zones of the United States, 2005

1972. National Atlas of the United States. This polygon shapefile portrays the time zones of the United States, Puerto Rico, and the U.S. Virgin Islands. Also included are the Greenwich Mean... National Atlas of the United States.

37. United States Crimes 2001-2002

2001. National Atlas of the United States. This map layer shows crime statistics for the United States for the years 2001-2002, drawn from the Uniform Crime Reporting Program datacompiled by... National Atlas of the United States.

38. Urban Areas of the United States, 2001

2001. Geological Survey (U.S.). This data set includes a selection of urban areas in the United States derived from the urban areas layer of the Digital Chart of the World (DCW). ... Geological Survey (U.S.).

39. Wildland Fires, USA, 1937 to 2017

1937. Wildland Fires documented by the National Park service between 1937 and 2017. National Park Service.