Presbyterorum Ordinis was created in 1965.

No. The Eucharist is the most important sacrament. This is the clear teaching of the Catholic Church, as is found, for example, in the Catechism of the Catholic Church:

1324 The Eucharist is "the source and summit of the Christian life" (Lumen Gentium, no. 11). "The other sacraments, and indeed all ecclesiastical ministries and works of the apostolate, are bound up with the Eucharist and are oriented toward it. For in the blessed Eucharist is contained the whole spiritual good of the Church, namely Christ himself, our Pasch" (Presbyterorum ordinis, no. 5).

Oriented Strand Board

Ordinis Sancti Benedicti (Order of St. Benedict)

Order of Saint Benedict

Gaudenzio Melani has written:

'Francescanesimo vivo' -- subject(s): Regula Ordinis Franciscani Saecularis

Elmar Wagner has written:

'Historia Constitutionum Generalium Ordinis Fratrum Minorum' -- subject(s): Franciscans