1. Harley MS 1, ff 79v-80v Reference (shelfmark): Harley MS 1, ff 79v-80v Title: Ars algorismi de fractionibus Scope & Content: Ars algorismi de fractionibus', incipit: 'Certificatur quandoque totum per partes... Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 2 folios.
