History 11,916 Catholic Church 6,685 Devotion to 4,210 Church history 3,614 Religious aspects 2,938 Liturgy 2,535 Catholic authors 2,441 Doctrines 2,163 Shrines 2,159 Missions 2,108 Spiritual life 2,000 Apparitions and miracles 1,813 Christian saints 1,728 Christianity 1,604 Theology 1,445 Canon law 1,306 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 835 Rosary 791 Catholics 759 Religious life and customs 750 Lord's Supper 749 English 733 Religious life 695 Theology, Doctrinal 624