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Nicolas III (patriarche de Constantinople, 10..-1111) : Epistula ad Papam Urbanum II, Portal Biblissima. Permalink: https://biblissima.demo.logilab.fr/ark:/43093/oedata89b9d436b5dd72b3810d8c8d166f2611288bdcb2 (seen 17/10/2026)
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