1. Harley MS 1, ff 55v-63v Reference (shelfmark): Harley MS 1, ff 55v-63v Title: Robert the Englishman, Commentary on Iohannes de Sacro Bosco, Tractatus de sphaera Scope & Content: Robert the Englishman, Commentary on Iohannes de Sacro Bosco, Tractatus de sphaera. Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 9 folios.
