6511

Edition Quasten, J.: Monumenta eucharistica et liturgica vetustissima (= Florilegium Patristicum Fasc. VII, Bonn 1935-37) mf. https://gso.gbv.de/DB=2.8/PPNSET?PPN=487699165
Catalogue Gamber, 1968:0082
Remark The "Canonica prex" in "De sacramentis"