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David Dalby, 1999/2000, The Linguasphere register of the world's languages and speech communities. Observatoire Linguistique, Linguasphere Press. Volume 2. Oxford.[1][permanent dead link][2][3]Archived 2014-08-27 at the Wayback Machine
David Dalby, 1999/2000, The Linguasphere register of the world's languages and speech communities. Observatoire Linguistique, Linguasphere Press. Volume 2. Oxford.[1][permanent dead link][2][3]Archived 2014-08-27 at the Wayback Machine
