The Pontifical Oriental Institute houses the only Catholic Faculty of Eastern Canon Law in the world. A major focus of work in this Institute is the Code of Canons of the Eastern Churches, which is the canonical code for all Eastern Catholic churches. Research is also conducted on the historical development of canons, the theology and practice of canon law, as well as the study of particular canons of specific churches. As in the other Faculties, students pursue licentiate (I.C.O.L.) and doctorate degrees (I.C.O.D.).