The author is also recorded as Gundisalvus de Villadiego.
Title from caption, leaf A1r.
Imprint from colophon, leaf D8v: Istud opus breve pro om[n]ibus: maxime pro clericis utile fecit Gundisalv[us] d[e] villadiego doctor i[n]iure canonico. Et fuit i[m]pressu[s] salma[n]tice a[n]no d[omi]ni .M.cccc.xcv.
Printed in the Printer of Nebrissensis's type 1:91/92G.
Signatures: A-B, D⁸: 24 leaves. Signature C is skipped without any loss to text.
Paper format: Chancery quarto.
PML copy leaf dimensions: 21.6 x 14.7 cm.
De irregularitate
Hand decoration: Rubrication unrealized. Annotations: Contemporary marginal notations throughout, bleached but still visible; margins are heavily stained (similar to PML 21141).