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Minnesota, United States
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1968
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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. 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.
7. 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...
8. 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:...
9. 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:...
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:...
12. 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. ...
13. 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.
14. 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...
15. Existing Forest Cover: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
16. 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:...
18. Existing Vegetation: Ecological Study for the Twin-Cities Metropolitan Area
1968. 1:62,500.
19. 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:...
20. 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...
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