Jean Paul Costa Books

La conscience des droits

By Jean Paul Costa

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Le Conseil d'Etat dans la societe contemporaine

By Jean Paul Costa

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International justice for children

By Jean Paul Costa

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Children's rights have gained greater global visibility through the almost universal ratification of the United Nations Convention on the Rights of the Child. Treaty bodies for other international...

La Cour europeenne des droits de l homme

By Jean Paul Costa

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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.