b [BAV, Barb. Lat 4087] 12r [1]
b [BAV, Barb. Lat 4087] 12v [2]
Links:[1] https://digi.vatlib.it/view/MSS_Barb.lat.4087/0027 [2] https://digi.vatlib.it/view/MSS_Barb.lat.4087/0028