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Kyrieanonymous SourcesPoznan: Biblioteka Zakladu Muzykologii Uniwersytetu Poznanskiego, MS without shelfmark, number 2 (1/1) (recto, Superius only).FacsimilesThe Manuscript London, British Museum Add. 29987, facsimile edition by Gilbert Reaney, [n.p.]: American Institute of Musicology, 1965. Musicological Studies and Documents 13, (Lo82v).   | 
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