Ardea Official journal of the Netherlands Ornithologists' Union |
Dijksen A.J., Lebret T., Ouweneel G.L. & Philippona J. (1973) Ornithological observations on the lagoons of the Dobrogea, Rumania, in autumn and winter of 1969, 1970 and 1971. ARDEA 61 (3-4): 159-178 |
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