Ferreira, Manuel Pedro2015-05-072015-05-071995FERREIRA, Manuel Pedro - As origens do Gradual de Braga. Didaskalia. Lisboa. ISSN 0253-1674. 25:1-2 (1995) 57-96.0253-1674http://hdl.handle.net/10400.14/17490porAs origens do Gradual de Bragajournal article10.34632/didaskalia.1995.1259