BX - Christian Denominations 392,733
B - Philosophy 280,925
BP - Islam, Bahaism, Theosophy 192,981
BS - The Bible 188,923
BL - Religions, Mythology, Rationalism 181,874
BF - Psychology 174,016
BV - Practical Theology 166,233
BR - Christianity 139,004
BM - Judaism 137,848
BT - Doctrinal Theology 113,625
BQ - Buddhism 87,133
BJ - Ethics 61,462
BD - Speculative Philosophy 46,213
BH - Aesthetics 15,368
BC - Logic 12,050
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