Brüssel Bibliothèque royale de Belgique Ms 15075
Choirbook with masses by Pierre de la Rue Facsimile published by Alamire Foundation Please note their terms of use!!
September 2015
http://www.idemdatabase.org/alamire/items/show/88
Choirbook with masses by Pierre de la Rue Facsimile published by Alamire Foundation Please note their terms of use!!
September 2015
http://www.idemdatabase.org/alamire/items/show/88