1968. Paul Jacobs, Rebecca Barney, Len Kne, Ya Tao, and Dan Milz. A digitized version of Ian McHarg's original 1968 Ecological Study for the Twin Cities Metropolitan Area: Composite Intrinsic Suitability. These ma... U-Spatial.
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1968. Map of Slope prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000 Bounding... Wallace, McHarg, Roberts and Todd.
443. Slopes - Generalized
1968. Bounding Box (W,S,E,N): -93.9791,44.4981,-92.8021,45.361 Ecological Study for the Twin Cities Metropolitan Area. Wallace, McHarg, Roberts and Todd.
1926. United States. Bureau of Chemistry and Soils. Base map in part from International Joint Commission charts. 93 x 56 Centimeters Scale [1:126,720] Minnesota County Maps, Plat Books, and Atlases. Field Operations, Bureau of Soils (Washington, D.C.?).
1968. Map of Soils - Generalized for Agricultural Purposes prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Met... Wallace, McHarg, Roberts and Todd.
1968. Map of Soils - Generalized for Urban Purposes prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolit... Wallace, McHarg, Roberts and Todd.
447. Spread city
Bounding Box (W,S,E,N): -93.9791,44.4981,-92.8021,45.361 Ecological Study for the Twin Cities Metropolitan Area.
1968. Map of Sub-Surface Geological Features prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area... Wallace, McHarg, Roberts and Todd.
1968. Map of Suitability for Extraction prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Sca... Wallace, McHarg, Roberts and Todd.
1968. Map of Suitability for Forestry prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale... Wallace, McHarg, Roberts and Todd.