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[untexted work: GB-Ob D.R.3 n1]anonymous liturgical work SourcesOxford: Bodleian Library, Dep. Deeds, Christ Church C.34/D.R.3\%, fol. 1 (1/0) (fragment).LiteratureSUMMERS, William. 'English Fourteenth-Century Polyphonic Music. An Inventory of the Extant Manuscript Sources', Journal of Musicology VIII/2 (1990), p. 41., p. 41.   | 
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