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Chisholm, Hugh, ed. (1911) "Usküb" Encyclopædia Britannica27 (11chi nashri) Cambridge University Press p. 811 "USKÜB, Uscup, or Skopia (anc. Scupi, Turk. Üshküb, Slav. Skoplye), the capital of the vilayet of Kossovo"