Tom Casteel Books

U. S. Constitution
U. S. Constitution

By Tom Casteel, Carla Mooney

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The U.S. Constitution
Underground Railroad
Underground Railroad
Holocaust
Holocaust

By Tom Casteel, Carla Mooney

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Holocaust
Holocaust

By Tom Casteel, Carla Mooney

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Innovators
Innovators

By Tom Casteel, Marcia Amidon Lusted

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Innovators
Innovators

By Tom Casteel, Marcia Amidon Lusted

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Extinction
Extinction

By Laura Perdew, Tom Casteel

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Oregon Trail
Oregon Trail

By Tom Casteel, Karen Bush Gibson

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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.

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