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201. Woodfordian Moraines of Illinois, 2004

1991. Illinois State Geological Survey. This is an SDE polygon feature class containing named Woodfordian moraines, or Wisconsinan end moraines, of Illinois. Scale is 1:500,000. The prima...

202. World Time Zones, 1991-2011

1991. Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the time zones of the world. The time zones are best displayed with World Countries or World Administrative Divis... Environmental Systems Research Institute (Redlands, Calif.).