- PR.K.
- PR.K.
► Abbreviation in Catacomb InscriptionsPridie Kalendas ("The Day Before the Calends")The Catholic Encyclopedia, Volume VIII. — New York: Robert Appleton Company. Nihil Obstat. 1910.
Catholic encyclopedia.
The Catholic Encyclopedia, Volume VIII. — New York: Robert Appleton Company. Nihil Obstat. 1910.
Catholic encyclopedia.