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Ecosystem services provided by birds.
Whelan CJ, Wenny DG, Marquis RJ. Whelan CJ, et al. Among authors: wenny dg. Ann N Y Acad Sci. 2008;1134:25-60. doi: 10.1196/annals.1439.003. Ann N Y Acad Sci. 2008. PMID: 18566089 Review.