 |
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| | | Type | Year Published |
| Elpers, Bettina | Regieren, Erziehen, Bewahren: mütterliche Regentschaften im Hochmittelalter | Book | 2003 |
| Leyser, K. | The German Aristocracy from the Ninth to the Early Twelfth Century A Historical and Cultural Sketch | Journal Article | 1968 |
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