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Que est ista... Ista est speciosa...Gloria patrianonymous verse SourcesGraz: Universitätsbibliothek III. 29 and 30, number 24 (2/2) (n30, fol. 228v-229).LiteratureLEFFERTS, Peter M. 'Oxford, Corpus Christi College, MS 144' [in] 'New sources of English thirteenth- and fourteenth-century polyphony', compiled by P. Lefferts and M. Bent, Early Music History, 2 (1982), pp. 351-352.   | 
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