000 00413nam a22001337a 4500
008 091031t xxu||||| |||| 00| 0 eng d
050 _aBT773
_b.L47
100 _aGREGORIANA, Analecta
245 _aDe Ratione Meriti
260 _aRome
_c1939
300 _apcm
942 _2lcc
_cARC
999 _c119869
_d119869