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.
1968. Map of Surficial Geology prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,... Wallace, McHarg, Roberts and Todd.