HELLEBREKERS WPJ (1961) Oölogische nidologische and communications, 1959-II and 1960. Putting together an Eurasian Oystercatcher and Northern Lapwing Vanellus vanellus and Haematopus ostralegus. LIMOSA 34 (3): 265-265.

Putting together an Eurasian Oystercatcher and Northern Lapwing Vanellus vanellus and Haematopus

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