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        Medieval Music Database  
Princeps apostolice turmemonophonic anonymous motet                   
Sources   
Cambridge: Gonville and Caius College 512/543, fol. 247v (1/1);  
Durham: Cathedral Library C.I.20, fol. 2v (1/1) (Triplum only).
Facsimiles   
Manuscripts of 14th Century English Polyphony: A Selection of Facsimiles, edited by Frank Ll. Harrison and Roger Wibberley, London: Stainer & Bell, 1982. Early English Church Music XXVI, plates 142, 152. 
Literature 
LEFFERTS, Peter M. The Motet in England in the Fourteenth Century, Ann Arbor: UMI Research Press, 1986, pp. 180, 239.   
   
        
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