CAMPHUYSEN CJ (1989) Book reviews: Tasker, M.L. ... (et al.), Vulnerable concentrations of birds in the North Sea, 1987. LIMOSA 62 (2): 105-105.

TASKER M. L. & PIENKOWSKI M. W. 1987. Vulnerable concentrations of birds in the North Sea. Nature Conservancy Council, Peterborough. 39 p.

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