Feeding ecology of sterlet Acipenser ruthenus L. in the Hungarian section of the Danube River
Fieszl, Jozsef, Bogacka-Kapusta, Elżbieta, Kapusta, Andrzej, Szymańska, Urszula, Martyniak, Andrzej
Gastropods and periphytic algae relationships in the vicinity of a small hydroelectric plant on the Pas³êka River in northeast Poland
Zębek, Elżbieta, Szymańska, Urszula