Ngā kupu hautoa kōpae
Tohutoro APA (7th ed.)
Leverett Frank. (1929). Map of the surficial deposits of the lake superior region. U. S. Geological Survey.
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Tohutoru Kātū Chicago (17th ed.)
Leverett Frank. Map of the Surficial Deposits of the Lake Superior Region. U. S. Geological Survey, 1929.
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Tohutoro MLA (9th ed.)
Leverett Frank. Map of the Surficial Deposits of the Lake Superior Region. U. S. Geological Survey, 1929.
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Kua rahua te tārua ki te papatopenga
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