| Subclass B | Philosophy (General) |
| Subclass BC | Logic |
| Subclass BD | Speculative philosophy |
| Subclass BF | Psychology |
| Subclass BH | Aesthetics |
| Subclass BJ | Ethics |
| Subclass BL | Religions. Mythology. Rationalism |
| Subclass BM | Judaism |
| Subclass BP | Islam. Bahaism. Theosophy, etc. |
| Subclass BQ | Buddhism |
| Subclass BR | Christianity |
| Subclass BS | The Bible |
| Subclass BT | Doctrinal Theology |
| Subclass BV | Practical Theology |
| Subclass BX | Christian Denominations |
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_b.pdf