Arithmetica [with commentary by Jacques Le Fèvre d'Etaples]. Jacobi Fabri Stapulensis Elementa musicalia, et Epitome in duos libros Arithmeticae Boethii. Rithmimachiae ludus by Johann Higman, Jacques Lefèvre d'Etaples, Wolfgang Hopyl, James P. R. Lyell, John Shirwood, William Hayman Cummings, Jordanus Nemorarius | Lex | Lex