1. Shapefile of the 1968 Ecological Study for the Twin Cities Metropolitan Area (Composite Intrinsic Suitability)
1968. Dan Milz, Jacobs, Paul (Research assistant), Kne, Len, Rebecca Barney, and Ya Tao. A digitized version of Ian McHarg's original 1968 Ecological Study for the Twin Cities Metropolitan Area: Composite Intrinsic Suitability. These ma... U-Spatial.