Patrick Perin Books

The Barbarian invasions of Europe

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Surveys the Germanic barbarian tribes that proliferated in Europe at the end of the Roman Empire and describes how their social life and customs formed the basis for early medieval civilization.

Au coeur des royaumes barbares les Francs

By Patrick Perin

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FRANC, peuple, BARBARE Du Vème au VIIIème siècle, l'Europe connaît de profonds bouleversements. Les Barbares s'installent sur les terres de l'ancien empire romain d'Occident. Ces peuples ne sont p...

Les Francs Collection Civilisations

By Patrick Perin

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Clovis et la naissance de la France

By Patrick Perin

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Les Francs

By Patrick Perin

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Les Francs

By Patrick Perin

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Les Francs

By Patrick Perin

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Dictionnaire des Francs. Les temps merovingiens

By Patrick Perin, Pierre Riche

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La Mediterranee et le monde merovingien

By Xavier Delestre, Patrick Perin, Michel Kazanski

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Clovis et les Merovingiens vers 250 751

By Patrick Perin, Gaston Duchet Suchaux

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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.