Carlos Hernandez Books

Rick Riordan Presents: Sal and Gabi Break the Universe-A Sal and Gabi Novel, Book 1

By Carlos Hernandez

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Rick Riordan Presents: Sal and Gabi Fix the Universe-A Sal and Gabi Novel, Book 2

By Carlos Hernandez

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Rick Riordan Presents: Sal and Gabi Fix the Universe-A Sal and Gabi Novel, Book 2

By Carlos Hernandez

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Rick Riordan Presents: Sal and Gabi Break the Universe-A Sal and Gabi Novel, Book 1

By Carlos Hernandez

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STRANGE ACADEMY: THE DEADLY FIELD TRIP

By Carlos Hernandez

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School is back in session! Strange Academy is taking a field trip to New York City to throw down against Brooklyn Visions Academy in the Multiversal Math Bowl! But when a mysterious new villain cra...

Divagancias Cuanticas

By Luciana Paradela, Carlos Hernandez

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Combate Naval Entre Las Escuadras de la Habana y Jamaica. Anno 1748

By Carlos Hernandez

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Soledad

By Luciana Paradela, Carlos Hernandez

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Lo Que Marco Mi Vida

By Carlos Hernandez, Pierre Nemoff, Audra Rosales, Saulius Rosales

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Sal and Gabi Break the Universe

By Carlos Hernandez

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Rick Riordan Presents a brilliant sci-fi romp with Cuban influence that poses this question: What would you do if you had the power to reach through time and space and retrieve anything you want, i...

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.