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41. Bailey's Ecoregions and Subregions of the United States, 2004

2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.

42. Biomass Resource Potential in the United States, Fall 2014

2015. Hart Energy Publishing. This polygon dataset contains estimates of biomass resource potential for the lower 48 states of the United States. The following feedstock categor... Hart Energy Publishing.

43. Biomass Resource Potential in the United States, Spring 2013

2013. Hart Energy Publishing. This polygon dataset contains estimates of biomass resource potential for the lower 48 states of the United States. The following feedstock categor... Hart Energy Publishing.

44. Biomass Resource Potential in the United States, Summer 2014

2014. Hart Energy Publishing. This polygon dataset contains estimates of biomass resource potential for the lower 48 states of the United States. The following feedstock categor... Hart Energy Publishing.

45. Boundary, United States, 2015

Hijmans, Robert J. and University of California, Berkeley. Museum of Vertebrate Zoology. This polygon shapefile contains the boundary of United States (adm0). This layer is part of the Global Administrative Areas 2015 (v2.8) dataset. University of California, Berkeley. Museum of Vertebrate Zoology.

46. California Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). California Block Groups represents the U.S. Census block groups of California. Environmental Systems Research Institute, Inc. (ESRI).

47. California Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). California Tracts represents the U.S. Census tracts and block numbering areas (BNA) of California. Environmental Systems Research Institute, Inc. (ESRI).

48. California ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). California ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit o... Environmental Systems Research Institute, Inc. (ESRI).

49. CDBG Activity by Tract, 1996-2016

1996. United States. Department of Housing and Urban Development. The Community Development Block Grant (CDBG) is a federal block grant distributed via formula to states and local governments. States and local gov... United States. Department of Housing and Urban Development.

50. CDBG Grantee Areas, 2016

2016. United States. Department of Housing and Urban Development. This polygon shapefile represents the boundaries of Community Development Block Grant (CDBG) Entitlement Communities and State Administered CDBG gr... United States. Department of Housing and Urban Development.