NBE Anthropology 23,894
NBC Doctrine of God 18,187
NCC Social ethics 16,266
NCA Ethics 13,902
NBF Christology 13,081
NBP Sacramentology; sacraments 12,277
NCF Sexual ethics 10,542
NBN Ecclesiology 10,104
NCG Environmental ethics; Creation ethics 9,274
NCD Political ethics 8,858
NBK Soteriology 7,579
NCE Business ethics 7,177
NBQ Eschatology 6,741
NAA Systematic theology 6,717
NBD Doctrine of Creation 6,027
NBG Pneumatology; Holy Spirit 4,016
NBJ Mariology 3,991
NBA Dogmatics 3,469
NAB Fundamental theology 3,366
NCB Personal ethics 3,362
NBB Doctrine of Revelation 3,275
NCH Medical ethics 3,127
NBM Doctrine of Justification 2,479
NBH Angelology; demonology 1,486
NCJ Ethics of science 1,232
NBL Doctrine of Predestination 760