BX - Christian Denominations 394,366
B - Philosophy 282,930
BP - Islam, Bahaism, Theosophy 195,053
BS - The Bible 189,951
BL - Religions, Mythology, Rationalism 183,165
BF - Psychology 175,045
BV - Practical Theology 166,750
BR - Christianity 139,663
BM - Judaism 139,515
BT - Doctrinal Theology 114,070
BQ - Buddhism 87,851
BJ - Ethics 61,891
BD - Speculative Philosophy 46,523
BH - Aesthetics 15,517
BC - Logic 12,106
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