1. Add MS 27863 Reference (shelfmark): Add MS 27863 Title: Manuel Bryennius, Harmonica (TLG 9029.001); Cleonides, Introductio harmonica (TLG 0361.001) Scope & Content: Manuel Bryennius, Harmonica (TLG 9029.001); Cleonides, Introductio harmonica (TLG 0361.001). Collection Area: Western Manuscripts Languages: Greek, Ancient Date Range: 16th century Extent: 121 folios