Leo Hartas Books

The Apartment Book
The Apartment Book

By Richard Platt

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Game Art
Game Art

By Dave Morris, Leo Hartas

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Mimi and the Picnic
Greek Myths
Sam Silver Undercover Pirate Kidnapped
The Double cross
The Double cross

By Jan Burchett

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Captain Blade's old enemy, Blackheart, is out for revenge. With his ruthless crew he's determined to steal the Sea Wolf. Can Sam and the pirates outwit their deadly enemy?

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Dog Walker
Dog Walker

By Jay Dale, Leo Hartas

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Dog Walker
Dog Walker

By Jay Dale, Leo Hartas

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Mia s Garden
Mia s Garden

By Anne Giulieri, Leo Hartas

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Ghosts of Givenham Mansion

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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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