Ellen Catala Books

What Has Changed Yellow Umbrella Books

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Who keeps us safe

By Ellen Catala

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"Simple text and photos present many people in the community that work to keep others safe"--Provided by publisher.

I love a parade

By Ellen Catala

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"Simple text and photos present opportunities to practice counting and to share in the excitement of watching a parade"--Provided by publisher.

Who keeps us safe

By Ellen Catala

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"Simple text and photos present people in the community that keep others safe"--Provided by publisher.

Animales En Peligro animals in Danger

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Como Te Mueves How Do You Move

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Que Ha Cambiado What Has Changed

By Ellen Catala

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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.