The "Costerian" Doctrinale of Alexander de Villa Dei. Reproduced in collotype facsimile [from a copy, in the Cambridge University Library, of an edition generally considered to have been printed by the "Printer of the Speculum" at Utrecht about 1470, but sometimes ascribed to Lourens Coster, of Haarlem, and an earlier date]. With introduction by Stephen Gaselee

"The "Costerian" Doctrinale of Alexander de Villa Dei. Reproduced in collotype facsimile [from a copy, in the Cambridge University Library, of an edition generally considered to have been printed by the "Printer of the Speculum" at Utrecht about 1470, but sometimes ascribed to Lourens Coster, of Haarlem, and an earlier date]. With introduction by Stephen Gaselee"@en