fortifications
| Author(s) | Title | Reference | |
|---|---|---|---|
| HEATHER O'DONOGHUE | Danish Medieval History-New Currents, by Niels Skyum-Nielsen, Niels Lund | 53/1, p. 147 | |
| R.H.C. Davis | Warfare in England, 1066-1189, by John Beeler | 37/2, p. 242 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| Amongst other works received are | 30/1, p. 64 |