Incunable Editions of Two Important Early Reference Works for Scholars of the Decretals of Gregory IX [Polonus, Martinus (Martin of Opava) (d.1278)]. Margarita Decreti Seu Tabula Martiniana Decreti. [Strasbourg: Printer of the 'Casus Breves Decretalium' (Georg Husner?)], 1493. [106] ff. Final leaf blank. Collation: a8, b-q6, r8. Complete. 52-line text..... More