Boleslau II da Boêmia (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Boleslau II da Boêmia" in Portuguese language version.

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books.google.com

Koziara, Thomas P. (2020). Historia Nostra: The Complete History of Poland: The 8th Century Until 1332 (em inglês). II. Niles: Aurifera S.A. p. 18
Jaquemet, F. H. (1857). Compendium of Chronology: Containing the Most Important Dates of General History, Political, Ecclesiastical, and Literary: From the Creation of the World to the End of the Year 1854 (em inglês). Londres: L. Brown, Green, Longmans, & Roberts. p. 98