| ↑ | A.Or.1 | Bibliographic introductions, bibliographies, library catalogues |   → ≈ |   |
| ↑ | A.Or.10 | General or transverse essays | → ≈ | |
| ↑ | A.Or.11 | Assirology - Monographs | → ≈ | |
| ↑ | A.Or.12 | assirology - monographs in series | → ≈ | |
| ↑ | A.Or.13 | History of the Ancient Near East | → ≈ | |
| ↑ | A.Or.13a | History of Mesopotamian Religions, Mesopotamian Mythology | → ≈ | |
| ↑ | A.Or.14 | Anatolian civilization (in general - Hittites, Persians) | → ≈ | |
| ↑ | A.Or.14a | Historical-cultural studies , religion | → ≈ | |
| ↑ | A.Or.14b | Linguistic and Grammatical Studies, Texts | → ≈ | |
| ↑ | A.Or.14c | Anatolian hieroglyphic | → ≈ | |
| ↑ | A.Or.14d | Iron Age: First millennium a. C | → ≈ | |
| ↑ | A.Or.15 | Anatolian civilization | → ≈ | |
| ↑ | A.Or.16 | Civilization of Syria and the Levant | → ≈ | |
| ↑ | A.Or.17 | Civilization of Syria and the Levant | → ≈ | |
| ↑ | A.Or.18 | Archaeology of the Near East (in general) | → ≈ | |
| ↑ | A.Or.18a | Archaeology of Mesopotamia, Syria | → ≈ | |
| ↑ | A.Or.18b | Glittic (also includes seals) | → ≈ | |
| ↑ | A.Or.18c | Anatolian archaeology | → ≈ | |
| ↑ | A.Or.2 | Encyclopedias and encyclopedic dictionaries , Historical Atlases | → ≈ | |
| ↑ | A.Or.3 | biographies | → ≈ | |
| ↑ | A.Or.4 | dictionary, vocabulary | → ≈ | |
| ↑ | A.Or.5 | conference proceedings | → ≈ | |
| ↑ | A.Or.6 | exhibition catalogues | → ≈ | |
| ↑ | A.Or.7 | Catalogues and guides of collections, museums | → ≈ | |
| ↑ | A.Or.8 | Editions of excavations, topography | → ≈ | |
| ↑ | A.Or.9 | manuals | → ≈ | |
| ↑ | A.Or.9a | Didactic manuals (textbooks) | → ≈ | |
| ↑ | A.Or.9b | various manuals | → ≈ | |
| ↑ | A.Or.9c | grammars | → ≈ | |
