James Lequeux Books

L univers devoile

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Présente l'histoire de l'astronomie du XXe siècle : les débuts de l'astronomie contemporaine, les grands télescopes, les nouveaux objets et domaines, la relation espace/ordinateur, l'époque de tran...

Francois Arago, un savant genereux

By James Lequeux

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Le Verrier

By James Lequeux

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L'observatoire de Paris

By James Lequeux, Laurence Bobis

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Le Verrier-Magnificent and Detestable Astronomer

By James Lequeux

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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.