Joana Marcus Books

Etereo Ethereal

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La nueva y esperadísima novela de Joana Marcús Caleb no es un chico corriente. Ha tenido una vida complicada, quizá por las habilidades especiales que lo convierten, a sus ojos...

Las luces de febrero February Lights

By Joana Marcus

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Cuarto y último libro de la saga Meses a tu Lado de Joana Marcús. Llega el esperadísimo final de la saga juvenil que ha enamorado a cientos de miles de lectores. Ellie Ross viv...

Etereo (Edicion limitada, cantos pintados) Ethereal (Limited Edition, Sprayed Edges)

By Joana Marcus

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La nueva novela de Joana Marcús en una edición especial limitada en tapa dura con cantos pintados Caleb no es un chico corriente. Ha tenido una vida complicada, quizá por las...

Sempiterno Sempiternal

By Joana Marcus

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El final de la bilogía «Extraños» de Joana Marcús: el desenlace de una historia de amor inolvidable.Tras varios meses en las sombras, la familia de extraños...

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.