HELLEBREKERS WPJ (1961) Oölogische nidologische and communications, 1959-II and 1960. Breed of Oystercatcher Haematopus ostralegus in a forest. LIMOSA 34 (3): 265-265.
Oölogische nidologische and communications, 1959-II and 1960. Breed of Eurasian Oystercatcher Haematopus ostralegus in a forest
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