William, de Montibus, approximately 1140–1213: Numerale [Latin]
- Manuscripts:
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- MS. Add. C. 263 — 13th century, second quarter (?); English
- MS. Bodl. 897 — 13th century, second half; England
- MS. Laud Misc. 345 — Composite manuscript
- Merton College MS. 257 — S. XIII; script of English appearance.
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.