| ↑ | B +n | Urbanism |   ≈ 711 |   |
| | B.1 | Bibliographic introductions, bibliographies, library catalogues | |
| ↑ | B.10 | History of manuscript tradition, Latin/Greek paleography, textual criticism | → ≈ | |
| ↑ | B.11 | Didactics and general scholastic manuals | → ≈ | |
| ↑ | B.11a | Greek Teaching and Manual | → ≈ | |
| ↑ | B.11b | Latin teaching and Manual | → ≈ | |
| ↑ | B.12 | essays | → ≈ | |
| ↑ | B.12a | Philosophical essays on issues pertaining to the Greco-Roman world | → ≈ | |
| ↑ | B.12b | Essays on ancient theatre and its influence on modern dramaturgy | → ≈ | |
| ↑ | B.12c | Essays on the relationship between orality and writing, popular literature | → ≈ | |
| ↑ | B.12d | Literary genres in general, both Greek and Latin treated cumulatively | → ≈ | |
| ↑ | B.13 | Mythology and symbology | → ≈ | |
| ↑ | B.14 | Latin and Greek metric | → ≈ | |
| ↑ | B.15 | Series of texts | → ≈ | |
| ↑ | B.16 | grammar | → ≈ | |
| ↑ | B.17 | Linguistics and History of Ancient Language | → ≈ | |
| | B.2 | Histology in ophthalmology | |
| | B.2 | Encyclopaedias and encyclopedic dictionaries | |
| | B.3 | Anatomy in ophthalmology | |
| ↑ | B.3 | | → ≈ | |
| | B.4 | Dictionaries, glossaries | |
| | B.5 | conference proceedings | |
| | B.6 | exhibition catalogues | |
| | B.7 | Studies in honour of e Scripta minora | |
| ↑ | B.7a | Studies in honour of | → ≈ | |
| ↑ | B.7b | scripta minora | → ≈ | |
| | B.8 | Manuals and general works of high scientific level | |
| | B.9 | History of classical philology and ancient fortune | |
| ↑ | B.Fil.gr.1 | Bibliographic introductions, bibliographies, library catalogues | → ≈ | |
| ↑ | B.Fil.gr.2 | Encyclopedias, encyclopedic dictionaries | → ≈ | |
| ↑ | B.Fil.gr.3 | biographies | → ≈ | |
| ↑ | B.Fil.gr.4 | dictionaries, glossaries | → ≈ | |
| ↑ | B.Fil.gr.5 | conference proceedings | → ≈ | |
| ↑ | B.Fil.gr.6 | exibition catalogues | → ≈ | |
| ↑ | B.Fil.gr.7 | Grammar and phonetics | → ≈ | |
| ↑ | B.Fil.gr.8 | linguistics | → ≈ | |
| ↑ | B.Fil.gr.9 | history of the language | → ≈ | |
| | B1 | hydraulics | |
| ↑ | B11 | italsider | ≈ 624.17 | |
| | BI | (electronics) | |
| ↑ | BI1 | automation in health care management | ≈ 610.28 | |
| ↑ | BI10 | models of biological systems | ≈ 610.15 | |
| ↑ | BI11 | clinical decision support system | ≈ 610.15 | |
| ↑ | BI12 | biomedical statistics | ≈ 610.72 | |
| ↑ | BI13 | biomedical engineering | ≈ 610.28 | |
| ↑ | BI14 | congresses (bioengineering) | ≈ 610.28 | |
| ↑ | BI2 | biophysics | ≈ 610153 | |
| ↑ | BI3 | bioimaging | ≈ 610.28 | |
| ↑ | BI4 | physical bioengineering | ≈ 610153 | |
| ↑ | BI5 | biomaterials, artificial organs and prostheses | ≈ 610.28 | |
| ↑ | BI6 | biomechanics and biomass | ≈ 612.7 | |
| ↑ | BI7 | data processing and biomedical signals | ≈ 610.28 | |
| ↑ | BI8 | clinical engineering | ≈ 612.7 | |
| ↑ | BI9 | rehabilitation engineering | ≈ 612.7 | |
| ↑ | BOI | reclamation and irrigation | ≈ 627.5 | |
