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Polakowski, M.; Jankowiak, L.; Stepniewski, K.; Stepniewska, K.; Kruckenberg, H.; Ebbinge, B. S.; Broniszewska, M.; Cichocka, A. Timing and Duration of Spring Staging of the Eurasian Greater White-Fronted Goose (Anser Albifrons Albifrons) in Relation to Sex, Age and Progress of Migration Season. Ornis Fenn 2019, 96, 24–32.