ENS B, BERREVOETS C, BRUINZEEL L, BULT T, HAANSTRA L, HULSCHER J, KOKS B, POL M. VAN DE, RAPPOLDT K, TEUNISSEN W & VERHULST S (2003) Synthesis: what caused the current decline of Oystercatchers in the Netherlands?. LIMOSA 76 (1): 33-34.

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