MEER G VAN DER (1940) Literatuur: W. Wuczeticz. 1939. Seasonal distribution of Ducks (subfam. Anatidae) on the base of bird ringing in the U.S.S.R. LIMOSA 13 (1): 110-110.

W. Wuczeticz, Seasonal distribution of Ducks (subfam. Anatinae) on the base of bird ringing in the U.S.S.R., III. 101 bIz., 4 kaarten. - Central Bureau for Birdringing, Moscow, 1939.

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