Carolingian realm
| Author(s) | Title | Reference | |
|---|---|---|---|
| Reginald Lennard | Medieval Technology and Social Change, by Lynn White Jr. | 32/1, p. 45 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| Reginald Lennard | Medieval Technology and Social Change, by Lynn White Jr. | 32/1, p. 45 |