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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...
2. 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...
3. 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...
4. 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...
5. 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...
6. Bakutis Coast - Marie Byrd Land: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -71°; Series: USGS Sketch Maps.
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. Blackburn Nunatak: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
9. Caloplaca Hills: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
10. 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...
11. 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:...
12. Climate Data - Summer: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Climate Data - Summer prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:...
13. 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:...
15. 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. ...
16. 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:...
23. Gambacorta Peak: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
24. Geology and origin of iron ore deposits of the Zenith mine, Vermilion district, Minnesota, SP-2, Plate 1
1968. Machamer, J.F. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of 17th level of Zenith Mine, scale 1 i...
25. Geology and origin of iron ore deposits of the Zenith mine, Vermilion district, Minnesota, SP-2, Plate 2
1968. Machamer, J.F. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of 18th level of Zenith Mine, scale 1 i...
26. Geology and origin of iron ore deposits of the Zenith mine, Vermilion district, Minnesota, SP-2, Plate 3
1968. Machamer, J.F. Geology cross section diagrams of Zenith Mine, scale 1 inch = about 100 feet.
27. 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...
28. 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...
29. 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...
30. Hobbs Coast - Marie Byrd Land: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -71°; Series: USGS Sketch Maps.
31. Hydrology: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
32. Leverett Glacier: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
33. Liv Glacier: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
34. 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:...
35. 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...
36. 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...
37. Major Rivers - Water Quality - Chemical: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Major Rivers - Water Quality - Chemical prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropoli...
38. Mount Joyce: Antarctica
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72°40' and -75°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
39. Mount Melbourne: Antarctica
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72°40' and -75°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
40. 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...
41. 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.
42. Northern Victoria Land: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -71°; Series: USGS Sketch Maps.
43. Pecora Escarpment: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
44. 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:...
45. Physiography: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
46. 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...
47. Preliminary geologic map of the Vermilion district and adjacent areas, northern Minnesota, M-5
1968. Sims, Paul K., Morey, G.B., Ojakangas, Richard W., and Griffin, W.L. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) around the Vermilion area, ...
48. Recreational Sites: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Recreational Sites prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250...
49. Reeves Névé: Antarctica
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72°40' and -75°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
50. Relief: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Relief prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000.
51. Relief Inlet: Antarctica
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72°40' and -75°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.
52. SANAE Station: Antarctica
1968. Projection: WGS72 Mercator Projection; Series: United States Navy Antarctic Nautical Charts.
53. Saunders Coast - Marie Byrd Land: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -71°; Series: USGS Sketch Maps.
54. Simple Bouguer gravity map of Minnesota, Hibbing sheet, M-3
1968. Ikola, R.J. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ...
55. Slope: Ecological Study for the Twin-Cities Metropolitan Area
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.
56. Slope: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
58. Soils - Generalized for Agricultural Purposes: Ecological Study for the Twin-Cities Metropolitan Area
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...
59. Soils - Generalized for Urban Purposes: Ecological Study for the Twin-Cities Metropolitan Area
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...
60. Soils-Generalized: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
61. Sub-Surface Geological Features: 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...
62. Suitability for Extraction: Ecological Study for the Twin-Cities Metropolitan Area
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...
63. Suitability for Forestry: Ecological Study for the Twin-Cities Metropolitan Area
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...
64. Surficial Geology: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
65. Surficial Geology: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Surficial Geology prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000.
66. Twin Cities Land Use Map from the Twin Cities Metropolitan Planning Commission, 1968
1968. Levinson, David M. and Chen, Wei. High-quality GIS land use maps for the Twin Cities Metropolitan Area for 1968 that were developed from paper maps (no GIS version existed previousl...
67. Wildlife Habitat - Water: Ecological Study for the Twin-Cities Metropolitan Area
1968. Map of Wildlife Habitat - Water prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale...
68. Wisconsin Range: Antarctica
1968. Projection: Polar Stereographic Projection: Standard Parallel -80°14'; Series: USGS 1:250,000 Topographic Reconnaissance Series.