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Hammarström, Harald; Forkel, Robert; Haspelmath, Martin et al., eds (2016). Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin et al., eds (2016). Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. http://glottolog.org/