Juan Carlos Crespo Books

AL MISTER SE LE VA LA OLLA ANTIESCUELA DE FUTBOL 3

By Juan Carlos Crespo

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Antiescuela de futbol 1. Los 7 Craks Soccer Anti-School 1. The 7 Phenoms

By Juan Carlos Crespo

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Antiescuela de fútbol es la nueva serie infantil de aventuras sobre fútbol. Y su componente más especial es que es ¡distinta a las demás! 7 chicos y chicas que conforman el equipo de fútbol y un mí...

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.