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Tohutoro APA (7th ed.)
Estados Unidos Geological Survey. (19). Sections showing development along fissures from Ahmeek mine to Pennsylvania mine, Keweenaw counyy, Mich. U. S. Geological Survey.
Tohutoru Kātū Chicago (17th ed.)
Estados Unidos Geological Survey. Sections Showing Development Along Fissures from Ahmeek Mine to Pennsylvania Mine, Keweenaw Counyy, Mich. U. S. Geological Survey, 19.
Tohutoro MLA (9th ed.)
Estados Unidos Geological Survey. Sections Showing Development Along Fissures from Ahmeek Mine to Pennsylvania Mine, Keweenaw Counyy, Mich. U. S. Geological Survey, 19.
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