1991. U.S. Census Bureau. and GeoLytics, Inc. District boundaries for the 102nd United States Congress, Jan. 3, 1991 to Jan. 3, 1993. Harvard Geospatial Library.
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2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line census 5-Digit ZIP code tabulation areas for the United States. The TIGER/Line Files are sha...
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for abaca fiber crop yields from 1997 to 2003. Data quality categories include ... University of Minnesota. Institute on the Environment.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for harvested areas of abaca fiber crops from 1997 to 2003. Data quality catego... University of Minnesota. Institute on the Environment.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for agave crop yields. Data quality categories include (0= missing, 0.25= count... University of Minnesota. Institute on the Environment.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for harvested areas of agave crops. Data quality categories include (0= missing... University of Minnesota. Institute on the Environment.
2002. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2002 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
2007. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2007 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for alfalfa forage crop yields. Data quality categories include (0= missing, 0.... University of Minnesota. Institute on the Environment.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the average yield for alfalfa forage crops in tons per hectare. Croplands cover ~15 million km2 of the planet and pr... University of Minnesota. Institute on the Environment.