1. Burney MS 283 Reference (shelfmark): Burney MS 283 Title: St Ambrose of Milan, De officiis ministrorum Scope & Content: ff. 1-26v: St Ambrose of Milan, De officiis ministrorum Books 1-3. Inc. "Non arrogans videri arbitror" Expl. "plurimum instructionis conferat". (CPL 144) Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: Parchment codex.