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Iceland
5
http//id.agrisemantics.org/gacs/C280
avian influenza
4
http//id.agrisemantics.org/gacs/C227
4
http//id.agrisemantics.org/gacs/C4569
4
http//id.agrisemantics.org/gacs/C5759
4
http//id.agrisemantics.org/gacs/C9971
4
poultry
4
surveillance
4
wild birds
4
Netherlands
1
Opinion
1
fluoride
1
heavy metals
1
http//id.agrisemantics.org/gacs/C12125
1
http//id.agrisemantics.org/gacs/C1476
1
volcanic ashes
1
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