EN
The occurrence of nematode Decoratoria decorata (Kram, 1927) Skrjabin, Sobolew et Iwaschkin, 1965 in Podiceps ruficollis (Pall., 1764) and Podiceps cristatus (L. 1758) in Poland
RU
Pojavlenie nematody Decoratoria decorata (Cram, 1927) Skrjabin, Sobolew et Iwashkin, 1965 u pogankia - Podiceps ruficollis (Pall., 1764) i u bol'shojj poganki - Podiceps cristatus (L. 1758) v Pol'she