Pius XII had prohibited the printing of new editions of the Breviary in 1956 because the 1960 revision (and others) were already planned. After 1960 the New Order took over the Breviary and destroyed it, like the Mass, with a new version, to which it even gave a new title: Liturgia H...
or Divine Office, contained in a liturgical book called theBreviarium Romanum, or Roman Breviary. In fact, the Mass is part of the Divine Office, and they are so intertwined in the public liturgy of the Church that one is really incomplete without the...