Catherine Hughes Books

Company Man

By Harry Barrett Pratt, Catherine Hughes

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National Geographic Little Kids First Big Book of the Ocean

By Catherine D. Hughes

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National Geographic Kids First Big Book of the Ocean is an adorable animal reference that includes the sea's high-interest animals, such as dolphins, sharks, sea otters, and penguins, and introduce...

National Geographic Little Kids First Big Book of Pets

By Catherine D. Hughes

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Playful puppies! Cuddly kittens! Beautiful birds! In the next book in the hit Little Kids First Big Book series, readers learn all about pets with fur, feathers, fins, scales, and shells--and how t...

National Geographic Little Kids First Big Book of Pets

By Catherine D. Hughes

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Little Kids First Big Book of Pets

By National Geographic Kids, Catherine D. Hughes, Marfe Ferguson Delano

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National Geographic Little Kids First Big Book of Reptiles and Amphibians

By Catherine D. Hughes

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This addition to the hit Little Kids First Big Book series explores the fascinating world of reptiles and amphibians, from slithering snakes and scaly lizards to bumpy frogs and spotty salamanders....

National Geographic Little Kids First Big Book of Dinosaurs

By Catherine D. Hughes

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The third title in National Geographic Little Kids First Big Book series, this book is for kids 4- to 8-years-old who LOVE dinos! The prehistoric world comes alive with dinosaurs small, b...

In Silence Cries the Heart

By Catherine Hughes

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In Silence Cries the Heart

By Catherine Hughes

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In Silence Cries the Heart

By Catherine Hughes

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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.