IAML has been appointed by IFLA as the maintenance agency of the codes and lists of terms. This task had been entrusted to the Sub-commission on UNIMARC, and now in the new structure the Cataloguing Section.
Codes and definitions for subfields $b-$d, position 2-4
At http://www.urfm.braidense.it/risorse/searchmedium_en.php you can find a searchable database for medium of performance, hosted by Ufficio Ricerca Fondi Musicali - Biblioteca Nazionale Braidense.
