DescriptionLappo.svg Suomi: Lappo. Lapon toimintaperiaate English: Siphon diagram Date 24 July 2006 Source Own work Author User:Tomia Permission (Reusing...
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Sources: Several regional field guides. Syroechkovski, E. E., Zöckler, C. & Lappo, E. (1998). Status of Brent Goose in northwestern Yakutia, East Siberia...
