Resources for intellectual formation e.g. patristics, commentaries, theology etc.
“Canon 43 (cf 1917 CIC 129) The Clerics, after being Ordained Priests, must not neglect studies, but rather increase them, to the greater apologetic erudition of the Church and especially in the Sacred Sciences in which they should follow the sound doctrines handed down to us by the Fathers and universally received by the Undivided Church.”