Andre Marquis Books

"Theoretical Models of Counseling and Psychotherapy represents a comprehensive overview of a variety of major counseling theories. Written for both student and practitioner, this text gives the rea...

Bien ecrire ou l'art de retravailler ses textes

By Andre Marquis

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A l'ere des dinosaures

By Andre Marquis

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Le style en friche, ou, L'art de retravailler ses textes

By Andre Marquis

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Si l'herbe pour toujours

By Andre Marquis

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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.