Esther Villardon Books

Vamonos para poder volver

By Esther Villardon, Jeff Tweedy

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Conexion

By Esther Villardon, Kae Tempest

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El libro de los trabalenguas The Tongue Twisters Book

By Esther Villardon Paula Blumen

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Un divertido libro repleto de trabalenguas para decirlos dos veces o mil. En el castillo Villadoom, de la calle Blumen, veintidós, trabalenguas encontrarás y no sabrás por cu&a...

El libro de las adivinanzas The Book of Riddles

By Esther Villardon Paula Blumen

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Un divertido libro repleto de adivinanzas para adivinar y compartir.¡Bienvenidos al castillo Villadoom, de la calle Blumen, veintidós,en el que ahora se han perdidomonstruos, animales...

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.