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Minnesota
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1968
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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...