Catholic Church 308 Religious aspects 142 History 93 Catholic authors 84 Doctrines 75 Education 44 Lord's Supper 42 Peace 41 Clergy 38 Christianity 37 Mass 37 Church and social problems 36 Religious life 35 Church and state 33 Marriage 33 Liturgy 32 Anti-Catholicism 30 English 30 Missions 29 Christian sociology 28 Church history 27 Papal documents 26 Study and teaching 26 Families 25 Christian life 24 Popes 24 Relations 24 Catholics 20 God 18 Christian union 16 Infallibility 16 Novenas 16 Apologetic works 14 Catechisms, English 14 Celebration 14