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1. Agricultural Production by Type: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Agricultural Production by Type prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area...
3. Annual Precipitation: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Annual Precipitation prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:2...
4. Aquifer Recharge Zones: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Aquifer Recharge Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1...
5. Average Annual Precipitation: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Average Annual Precipitation prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. S...
6. Average Number of Frost-Free Days: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Average Number of Frost-Free Days prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Ar...
7. Bedrock Geology: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Bedrock Geology prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000.
8. Climate Data - Fall: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Climate Data - Fall prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:25...
9. Climate Data - Spring: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Climate Data - Spring prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
10. Climate Data - Winter: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Climate Data - Winter prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
13. Ecological Forest Communities: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Ecological Forest Communities prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. ...
14. Economic Minerals: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Economic Minerals prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000.
17. Existing Forest Cover and Forest Related Industry: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Existing Forest Cover and Forest Related Industry prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities...
18. Existing Forest Cover: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
19. Existing Urbanization: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Existing Urbanization prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
21. Existing Vegetation: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
22. Foundation Conditions: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Foundation Conditions prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
24. Glaciation Movements: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Glaciation Movements prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:2...
25. High Temperature Zones: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of High Temperature Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1...
26. Historical Landmarks: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Historical Landmarks prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:2...
28. Hydrology: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
31. Low Temperature Zones: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Low Temperature Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
34. Major River - Water Quantity: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Major River - Water Quantity prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. S...
35. Major Rivers - Water Quality - Biological: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Major Rivers - Water Quality - Biological prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropo...
36. Map showing peat deposits of Itasca County, Minnesota
1919. Minnesota Geological Survey. Scale not given (W 94°25ʹ00ʺ--W 93°03ʹ00ʺ/N 47°53ʹ00ʺ--N 47°01ʹ00ʺ). "Plate IV" in upper right corner. [From Bulletin No. 16, 1919, The Peat Deposi...
39. Natural Forest Regions: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Natural Forest Regions prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1...
40. Navigability: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Navigability prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000.
41. Peat deposits of Beltrami County, Minnesota showing location of soundings and depth of peat and topography of the surface of the
1915. Minnesota Geological Survey. Scale not given (W 95°36ʹ00ʺ--W 94°24ʹ00ʺ/N 48°59ʹ00ʺ--N 47°24ʹ00ʺ). Relief shown by contours. "Plate II" in upper right corner. "Compiled from fie...
42. Physiographic Regions: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Physiographic Regions prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
43. Physiography: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
44. Precipitation Zones: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Precipitation Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:25...