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Elton, Charles S. (Charles Sutherland), 1900-1991.
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Ecology out of joint : new environments and why they happen

Milne, Lorus Johnson, 1910-1987.
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Life out of bounds : bioinvasion in a borderless world

Bright, Chris.
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Stemming the tide : controlling introductions of nonindigenous species by ships' ballast water

Washington, D.C. : National Academy Press, 1996.