1.
Philosophy and Science of Roger Bacon : Studies in Honour of Jeremiah Hackett
by Polloni, Nicola, Kedar, Yael
ISBN: 9780367755843
List Price: $48.95
2.
The Philosophy and Science of Roger Bacon: Studies in Honour of Jeremiah Hackett
by Polloni, Nicola, Kedar, Yael
ISBN: 9780367471743