Nergiz H Tabur M A Ayvaz Y 2014 Population sizes and migration times of the White headed Duck Oxyura leucocephala Scopoli 1769 in Turkey Bitlis Eren Univ J Sci Technol 4 2 20 22
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Nergiz H Tabur M A Ayvaz Y 2014 Population sizes and migration times of the White headed Duck Oxyura leucocephala Scopoli 1769 in Turkey Bitlis Eren Univ J Sci Technol 4 2 20 22