To make pastoral applications of the Marian teachings of the Second Vatican Council Pope Paul VI in 1974 authored the apostolic exhortation Devotion to Mary (Marialis Cultus).
Ya kufanya maombi ya wafugaji wa mafundisho Marian wa Pili wa Vatican Baraza Papa Paulo VI mwaka 1974 mwandishi wa kitume kuonya Ibada kwa Maria (Marialis Cultus).