Jean Lesaulnier Books

Images de Port Royal

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"Cet ouvrage est la suite d'un premier volume publié dans la même collection. Ces études ne sont pas simplement juxtaposées : se complétant l'une l'autre, elles forment un tout et visent à rendre c...

Images de Port-Royal

By Jean Lesaulnier

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Antoine Arnauld

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Images de Port-Royal

By Jean Lesaulnier

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Port Royal et la prison

By Jean Lesaulnier

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OEuvres Completes. Tome II

By Angelique Arnauld, Jean Lesaulnier, Thomas M. Carr, Francoise Pouge Bellais, Anne Claire Volongo

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Constitutions du Monastere de Port Royal du Saint Sacrement

By Jean Lesaulnier, Veronique Alemany, Francoise De Guilhermier

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Port Royal et la Medecine

By Georges Duboucher, Jean Lesaulnier

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.