B - Philosophy (General)
BC - Logic
BD - Speculative philosophy
BF - Psychology
BH - Aesthetics
BJ - Ethics
BL - Religions. Mythology. Rationalism
BM - Judaism
BP - Islam. Bahaism. Theosophy, etc.
BQ - Buddhism
BR - Christianity
BS - The Bible
BT - Doctrinal Theology
BV - Practical Theology
BX - Christian Denominations
For more detailed information, visit the Library of Congress Classification Outline.
B - Philosophy (General)
BC - Logic
BD - Speculative philosophy
BF - Psychology
BH - Aesthetics
BJ - Ethics
BL - Religions. Mythology. Rationalism
BM - Judaism
BP - Islam. Bahaism. Theosophy, etc.
BQ - Buddhism
BR - Christianity
BS - The Bible
BT - Doctrinal Theology
BV - Practical Theology
BX - Christian Denominations