Catherine D. Hughes Books

Cuon sach lon dau tien cua to

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Introduces several of the ocean's species, provides profiles of creatures, from dolphins and sharks to sea otters and penguins, while sharing facts about their characteristics, diets, and habitats.

National Geographic Little Kids Ilk Uzay Kitabim

By Catherine D. Hughes

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Ilk Dinozor Kitabim

By Catherine D. Hughes

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Mi primer gran libro del oceano

By Catherine D. Hughes

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Mi primer gran libro de los animales

By Catherine D. Hughes

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Mi primer gran libro de bichos

By Catherine D. Hughes

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Mi primer gran libro de reptiles y anfibios

By Catherine D. Hughes

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National Geographic Kids Look Learn

By National Geographic

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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...

Book of dinosaurs

By Catherine D. 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.