Ahlgren, C. E., & Ahlgren, I. (2001). Lob trees in the wilderness: The human and natural history of the boundary waters. University of Minnesota Press.
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Chicago Style (17th ed.) Zitazioa
Ahlgren, C. E., eta Isabel Ahlgren. Lob Trees in the Wilderness: The Human and Natural History of the Boundary Waters. Minneapolis, MN: University of Minnesota Press, 2001.
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MLA (9th ed.) Zitazioa
Ahlgren, C. E., eta Isabel Ahlgren. Lob Trees in the Wilderness: The Human and Natural History of the Boundary Waters. University of Minnesota Press, 2001.
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