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| 1. |
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The Art of Ecology
G Evelyn Hutchinson, David K Skelly, David M Post, Melinda D Smith
Häftad. Yale University Press, USA, 2011.
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| 2. |
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Exploration and Discovery
David K Skelly, Thomas J Near, Robert Lorenz
Häftad. Peabody Museum of Natural History, Yale University, USA, 2016.
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