SACROBOSCO, Johannes. Sphaera Ioannis de Sacrobosco emendata. Paris: G.Cavellat, 1561. Title with woodcut printers device, woodcut illustrations two with moveable volvelles. - Quaestiones novae in libellum de sphaera. Paris: G.Cavellat, 1552. Woodcut illustrations, 2 folding tables. - Georg PURBACH. Theoricae Novae Planetarum. Paris: C.Perier, 1557. Woodcut illustrations. The 3 works in one volume. (Light staining and soiling particularly affecting the lower margins of the last work, several small holes affecting final 3 leaves with loss of a few characters. Contemporary limp vellum (stained).
SACROBOSCO, Johannes. Sphaera Ioannis de Sacrobosco emendata. Paris: G.Cavellat, 1561. Title with woodcut printers device, woodcut illustrations two with moveable volvelles. - Quaestiones novae in libellum de sphaera. Paris: G.Cavellat, 1552. Woodcut illustrations, 2 folding tables. - Georg PURBACH. Theoricae Novae Planetarum. Paris: C.Perier, 1557. Woodcut illustrations. The 3 works in one volume. (Light staining and soiling particularly affecting the lower margins of the last work, several small holes affecting final 3 leaves with loss of a few characters. Contemporary limp vellum (stained).

细节
SACROBOSCO, Johannes. Sphaera Ioannis de Sacrobosco emendata. Paris: G.Cavellat, 1561. Title with woodcut printers device, woodcut illustrations two with moveable volvelles. - Quaestiones novae in libellum de sphaera. Paris: G.Cavellat, 1552. Woodcut illustrations, 2 folding tables. - Georg PURBACH. Theoricae Novae Planetarum. Paris: C.Perier, 1557. Woodcut illustrations. The 3 works in one volume. (Light staining and soiling particularly affecting the lower margins of the last work, several small holes affecting final 3 leaves with loss of a few characters. Contemporary limp vellum (stained).