http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Liber Usualis Missae et officii pro dominicis et festis cum cantu gregoriano: ex editione Vaticana Adamussim excerpto et rhythmicis signis in subsidium cantorum
last modification 20130320 10:13:16 Rodrigo Vera