ENGELMOER M: NIEBOER E, ROSSELAAR K & BOERE G (1996) Dutch Ornithological Union: Theme day wading birds (re) counts: The geographical origin of breeding waders in the Wadden Sea. LIMOSA 69 (3): 141-141.

Dutch Ornithological Union: Theme day wading birds (re) counts: The geographical origin of breeding waders in the Wadden Sea

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