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Les observations d'espèces soumises à homologation nationale en France en 1991 = The National Rarities Committee - Observations verified by the committee during 1991 in FranceDUBOIS, P. J.Alauda (Dijon). 1992, Vol 60, Num 4, pp 199-221, issn 0002-4619Conference Paper

Nidification de l'Eider de Steller Polysticta stelleri du Taïmyr à la Péninsule de Yamal, Sibérie = Steller's Eider Polysticta stelleri nesting between the Taimyr and the Yamal Peninsula, SiberiaYESOU, P; LAPPO, H. G.Alauda (Dijon). 1992, Vol 60, Num 4, pp 193-198, issn 0002-4619Conference Paper