History 11,914 Catholic Church 6,685 Devotion to 4,210 Church history 3,613 Religious aspects 2,938 Liturgy 2,533 Catholic authors 2,441 Doctrines 2,161 Shrines 2,158 Missions 2,108 Spiritual life 1,999 Apparitions and miracles 1,813 Christian saints 1,728 Christianity 1,604 Theology 1,445 Canon law 1,305 Novenas 1,305 Clergy 1,303 Education 1,245 Controversial literature 1,221 Christian life 1,135 Meditations 1,060 Christian ethics 933 Church and state 898 Church architecture 846 Early works to 1800 839 Biography 838 Christian pilgrims and pilgrimages 834 Rosary 791 Catholics 758 Religious life and customs 750 Lord's Supper 749 English 733 Religious life 695 Theology, Doctrinal 623