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Wibaldus Corbeiensis (1098 – 1158), Epistolae (1158): EPISTOLA CCCXLIV. WIBALDI ...
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Wibaldus Corbeiensis (1098 – 1158), Epistolae (1158): EPISTOLA CCCXLIV. WIBALDI ABBATIS AD EUGENIUM PAPAM III. (Anno 1152.), Corpus Corporum, Universität Zürich