Gem citationer
APA (7th ed.) Citation
Leverett Frank. (1929). Map showing areas formerly covered by glacial lakes of Northern Minnesota, Northern Wisconsin, and Northern Peninsula of Michigan. U. S. Geological Survey.
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Chicago Style (17th ed.) Citation
Leverett Frank. Map Showing Areas Formerly Covered by Glacial Lakes of Northern Minnesota, Northern Wisconsin, and Northern Peninsula of Michigan. U. S. Geological Survey, 1929.
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MLA (9th ed.) Citation
Leverett Frank. Map Showing Areas Formerly Covered by Glacial Lakes of Northern Minnesota, Northern Wisconsin, and Northern Peninsula of Michigan. U. S. Geological Survey, 1929.
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