Helena Villar Janeiro Books

El abuelo de Pipa

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Pipa y su abuelo no hablan la misma lengua ni pertenecen a la misma cultura, pero aun así, Pipa ayudada por la muñeca Tarnas y el canario Ismael logra crear alrededor de su abuelo una atmósfera d...

CONTOS DO SOL E DA LUA

By Ana Costas Frade, Helena Villar Janeiro

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O caderno de Edua

By Helena Villar Janeiro, Carmen Queralt Arribas

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El cuaderno de Edua

By Helena Villar Janeiro, Moises Barcia Rodriguez, Carmen Queralt Arribas

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El quadern de l Edua

By Helena Villar Janeiro, Esteve Valls I Alecha, Carmen Queralt Arribas

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Belidadona

By Helena Villar Janeiro

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Simbolos de Galicia

By Helena Villar Janeiro

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O enterro da galina de Domitila Rois

By Helena Villar Janeiro

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Viaxe a illa redonda

By Helena Villar Janeiro

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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.