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Wadden Sea Ecosystem 22: Breeding Birds in the Wadden Sea in 2001
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Harbour Seal Numbers in the Wadden Sea and on Helgoland in 2004 and 2005
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Wadden Sea Ecosystem 20: Migratory Waterbirds in the Wadden Sea 1980 - 2000
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Wadden Sea Ecosystem 18: Contaminants in Bird Eggs in the Wadden Sea
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Wadden Sea Ecosystem 19: Wadden Sea Quality Status Report 2004
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2004 Evaluation of Trilateral Monitoring and Assessment Programme Data Handling
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Harbour Seal Numbers in the Wadden Sea and on Helgoland in 2003
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2002 Seal epidemic
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Harbour Seal Numbers in the Wadden Sea and on Helgoland in 2002
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Harbour Seal Numbers in the Wadden Sea and on Helgoland in 2001
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