• publisher: London : Pub. for the Plainsong & Mediæval Music Society
  • creator: Wyatt, E. G. P. (Edward Gerald Penfold), b. 1869 Plainsong and Mediaeval Music Society (Great Britain)
  • contributor: Plainsong and Mediaeval Music Society (Great Britain)
  • Keyword: Gregory I, Pope, ca. 540-604. Gregorian chants History and criticism.
  • years: 1904.
  • pages: 40 p. :
  • notes: "Sources": p. [3]
  • download: pdf file