Roberto Aliaga Books

El viejo y la margarita

By Roberto Aliaga, Raul Guridi

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Holiday Book Level 1o Primary

By Roberto Aliaga Sanchez, Watkins Montserrat

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Holiday Book Level 2o Primary

By Roberto Aliaga Sanchez, Watkins Montserrat

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Ipuina bete otso

By Roberto Aliaga, Roger Olmos Pastor

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The little golden key

By Roberto Aliaga

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One Saturday morning, the Mouse brothers set off in search of adventure. They were very happy: the big one, the middle-sized one, and the little one. Next to the path, they saw something glittering...

Entresombras y la cabalgata macabra

By Roberto Aliaga

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Mateo is determined to rescue his brother Lucas from the shadow world, where he has been trapped for quite some time. In his way, however, stands the nefarious Grandfather Twilight, who is eager to...

La cosa negra

By Roberto Aliaga, Marta Garatea

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El conte de l altre dia

By Roberto Aliaga, Noemi Villamuza

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Dorothy

By Roberto Aliaga

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Explorando los temas de la amistad y la intimidación, este enternecedor libro ilustrado presenta una niña con una amiga llamada Dorothy. Dorothy no es como los otros niños en el colegio: es muy gra...

DON FACUNDO IRACUNDO EL VECINO DEL SEGUNDO

By Roberto Aliaga Sanchez, Raul Sagospe Romero

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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.