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Long-term changes in agricultural practices and wildfowling in an internationally important wetland, and their effects on the guild of wintering ducks
- DUNCAN, Patrick. Long-term changes in agricultural practices and wildfowling in an internationally important wetland, and their effects on the guild of wintering ducks. In Journal of applied ecology. - M. W. Pienkowski : Peterborough. ISSN 0021-8901, 1999, vol. 36, no. 1, s. 11-23.
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