Planning a census of the Harbour Seal (Phoca vitulina on the coasts of the Netherlands
Van Bemmel, A.C.V. (1956). Planning a census of the Harbour Seal (Phoca vitulina on the coasts of the Netherlands. Beaufortia 5(54): 121-132
In: Beaufortia. Zoological Museum: Amsterdam. ISSN 0067-4745, more
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