have forty-four incunabula (books printed before 1500). One of these
books from the early days of printing is this very rare book by
Pietro de Crescenzi (ca. 1230-ca. 1320) on agricultural science,
the Opus Ruralium Commodorum (1471).
Pietro de Opus ruralium commodorum. Augsburg: Johann Schüssler,
near Bologna between 1230 and 1307 and studied animal husbandry
and agriculture. His first books were handwritten manuscripts and
this printed version imitated the manuscripts closely with its hand
illumination. The verso of the first page is a manuscript on vellum
of a tenth-century Easter chant.