@article{Petit:3147, author = "Johannes de Sacro Bosco and Petit, Jean", title = "{Tractatus de Sphera mundi johannis de Sacro bosco anglici...una cum....additionibus ac uberrimo commentario Petri Ciruelli barocemi...atque...subtilibus ...Cardinalis Petri Aliaco}", year = "1508", note = "Marca tip. en port.", }