| 1 | Philosophy | 100.000 – 199.999 |
| 2 | Religion | 200.000 - 219.999 |
| 3 | Holy Bible | 220.000 – 229.999 |
| 4 | Archeology | 220.93 |
| 5 | Dogmatic Theology | 230.000 – 239.999 |
| 6 | Moral Theology | 240.000 – 241.999 |
| 7 | Spiritual Theology | 242.000 – 242.999 |
| 8 | Christian Experience | 248.000 – 248.999 |
| 9 | Spiritual Retreats | 249.000 – 249.999 |
| 10 | Homiletics | 251.000 – 252.999 |
| 11 | Pastoral Theology | 253.000 – 254.999 |
| 12 | Catechesis | 255.000 – 256.999 |
| 13 | Liturgy | 257.000 – 259.999 |
| 14 | Ecclesiology | 260.000 – 262.699 |
| 15 | Magisterum | 262.700 – 262.899 |
| 16 | Canon Law | 262.900 – 262.999 |
| 17 | Apostolic Movements | 267.000 – 269.999 |
| 18 | Church History | 270.000 – 279.999 |
| 19 | Jerusalem Church | 275.694 |
| 20 | Eastern Churches | 280.000 – 289.999 |
| 21 | Other Religions | 290.000 – 295.999 |
| 22 | Judaism | 296.000 – 296.999 |
| 23 | Islam | 297.000 – 297.999 |
| 24 | Near & Middle East (Palestine) | 298.000 – 298.999 |
| 25 | Sociology & Social Sciences | 300.000 – 369.999 |
| 26 | Education | 370.000 – 379.999 |
| 27 | Langauges | 400.000 – 499.000 |
| 28 | Sciences (Math, Physics, Chemsitry, …) | 500.000 – 599.000 |
| 29 | General Technology | 600.000 – 699.000 |
| 30 | Arts & Music | 700.000 – 799.000 |
| 31 | Literature (Arabic, English, French, …) | 800.000 – 899.000 |
| 32 | History & Geography | 900.000 – 921.999 |
| 33 | Saints & Servants of God | 922.000 – 922.999 |
