BX - Christian Denominations 393,523
B - Philosophy 281,891
BP - Islam, Bahaism, Theosophy 193,902
BS - The Bible 189,403
BL - Religions, Mythology, Rationalism 182,430
BF - Psychology 174,501
BV - Practical Theology 166,483
BR - Christianity 139,325
BM - Judaism 138,729
BT - Doctrinal Theology 113,821
BQ - Buddhism 87,473
BJ - Ethics 61,684
BD - Speculative Philosophy 46,364
BH - Aesthetics 15,435
BC - Logic 12,063
N - Visual Arts 3
E - United States History 2
KF - United States 1
M - Music 1
S - General Agriculture 1
V - General Naval Science 1