=033  ##$a1543
=001  1000000287
=240  ##$aNA$02
=245  ##$aMs. 18 (part 1)
=300  ##$amanuscript of polyphony, $c700 x 500
=340  ##$dNA
=592  ##$aNA
=774  ##$w1000001837
=774  ##$w1000001838
=852  ##$aE-Tc$cMs. 18 (part 1)$eArchivio y Biblioteca Capitulares de la Catedral Metropolitana$x464
=856  ##$uNA$zNA