NBE Anthropology 23,887
NBC Doctrine of God 18,181
NCC Social ethics 16,259
NCA Ethics 13,897
NBF Christology 13,073
NBP Sacramentology; sacraments 12,275
NCF Sexual ethics 10,539
NBN Ecclesiology 10,102
NCG Environmental ethics; Creation ethics 9,270
NCD Political ethics 8,851
NBK Soteriology 7,579
NCE Business ethics 7,175
NBQ Eschatology 6,739
NAA Systematic theology 6,717
NBD Doctrine of Creation 6,024
NBG Pneumatology; Holy Spirit 4,015
NBJ Mariology 3,991
NBA Dogmatics 3,469
NAB Fundamental theology 3,366
NCB Personal ethics 3,357
NBB Doctrine of Revelation 3,274
NCH Medical ethics 3,125
NBM Doctrine of Justification 2,479
NBH Angelology; demonology 1,486
NCJ Ethics of science 1,231
NBL Doctrine of Predestination 760