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Kyrie, Rex omnium virginuumanonymous SourcesVienna: Österreichische Nationalbibliothek 1925, fol. 149 (2/2).FacsimilesEnglish Fourteenth-Century Polyphony: Facsimile Edition of Sources Notated in Score, edited by William J. Summers, Tutzing: H. Schneider, 1983. Münchner Editionen zur Musikgeschichte IV, plate 177 (Selden312-312v (frag.)).   | 
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