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2001. World Resources Institute. This polygon shapefile represents the average number of crops grown in croplands of central and western Kenya, 1997. This map combines detailed cro... World Resources Institute.
2001. World Resources Institute. This polygon shapefile depicts the share of cropland that is dedicated to food crops, irrespective of the overall intensity of cultivation. By usin... World Resources Institute.
1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, and 2011. County of San Mateo Information Services Department. This polygon shapefile depicts land areas within the County of San Mateo, California that receive tax breaks under the Williamson Act. The Californ... County of San Mateo Information Services Department.