Biometric and ecological studies on the bleak, Alburnus alburnus (Linnaeus) (Pisces, Cyprinidae) from different bodies of water in Poland, in connexion with geographic variability of this species / Matylda Gąsowska. — Warszawa : Państwowe Wydawnictwo Naukowe, 1974. — 33 с. — (Annales zoologici ; t. 31, № 4) - Gąsowska, Matylda (Annales zoologici, 1974)