=001  1000000491
=031  ##$a1.18.1.
=040  ##$aAuArU$beng
=041  0#$aLatin
=100  1#$aByttering$dfl c1410-1420$02
=240  10$aGloria: Et in terra (OH no. 18)$mNA$0134
=245  10$aOld Hall Manuscript
=590  ##$aVocal parts$bparts, f.14v$801
=650  07$aOrdinary of the Mass$08
=695  ##$aunison canon$b1$c2$dex$eunison$fNA$g4$hbreve(s)$o$069
=773  18$w1000000029
=852  ##$aGB-Lbl$cAdd. 57950$eBritish Library$x170