upennmanuscripts:Our last entry for the #SIMSseries on LJS 26, a 13th c. astrological and mathematic

upennmanuscripts:Our last entry for the #SIMSseries on LJS 26, a 13th c. astrological and mathematical manuscript, a closer look at a text page with marginal notes, and a front and back view of a #parchment repair through the middle of two diagrams.Online record: bit.ly/3FnU5ht -- source link