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<a href="https://lex-books.com/author/de-montreuil-active-13th-century-gerbert"><img src="https://lex-books.com/badges/read-on-lex.svg" alt="de Montreuil, active 13th century Gerbert on Lex" width="160" height="40"></a>[](https://lex-books.com/author/de-montreuil-active-13th-century-gerbert)[url=https://lex-books.com/author/de-montreuil-active-13th-century-gerbert][img]https://lex-books.com/badges/read-on-lex.svg[/img][/url]de Montreuil, active 13th century Gerbert on Lex: https://lex-books.com/author/de-montreuil-active-13th-century-gerbert