purification
| Author(s) | Title | Reference | |
|---|---|---|---|
| Alberic Stacpoole | The Cluniacs and the Gregorian Reform, by H. E. J. Cowdrey | 41/2, p. 174 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| Alberic Stacpoole | The Cluniacs and the Gregorian Reform, by H. E. J. Cowdrey | 41/2, p. 174 |