BX - Christian Denominations 393,537
B - Philosophy 281,911
BP - Islam, Bahaism, Theosophy 193,910
BS - The Bible 189,412
BL - Religions, Mythology, Rationalism 182,436
BF - Psychology 174,504
BV - Practical Theology 166,490
BR - Christianity 139,334
BM - Judaism 138,773
BT - Doctrinal Theology 113,824
BQ - Buddhism 87,477
BJ - Ethics 61,689
BD - Speculative Philosophy 46,366
BH - Aesthetics 15,435
BC - Logic 12,064
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