BX - Christian Denominations 393,232
B - Philosophy 281,553
BP - Islam, Bahaism, Theosophy 193,479
BS - The Bible 189,244
BL - Religions, Mythology, Rationalism 182,212
BF - Psychology 174,255
BV - Practical Theology 166,398
BR - Christianity 139,211
BM - Judaism 138,457
BT - Doctrinal Theology 113,739
BQ - Buddhism 87,352
BJ - Ethics 61,600
BD - Speculative Philosophy 46,298
BH - Aesthetics 15,412
BC - Logic 12,055
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