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Bertold Bretholz, ed., Cosmae Pragensis Chronica Boemorum, MGH Scriptores rerum ...
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Bertold Bretholz, ed., Cosmae Pragensis Chronica Boemorum, MGH Scriptores rerum Germanicarum, Nova Series II (Berlin: Weidmann, 1923), Book I, ch. 27, p. 49.