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    Population dynamics of Barbus barbus plebejus (Valenciennes) and Leuciscus cephalus cabeda (Risso) in the middle River Po (Italy)

    Scales from 427 Barbus barbus plebejus and 406 Leuciscus cephalus cabeda from the middle River Po were examined. The last annulus was formed between April and May 1977, except the 0–1 age-group of L.c. cabeda whi...

    R. Vitali, L. Braghieri in Hydrobiologia (1984)