Sebastien De Castell Books

Spellslinger

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How do you survive a mage's duel without magic? Kellen's about to risk everything: His family, his home, even his own life....When you're a Jan'Tep initiate approaching your sixteenth birthday, you...

Shadowblack

By Sebastien De Castell

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A Shadowblack plague is taking hold. It's a few months since Kellen left his people behind. Now 16, Kellen and Reichis have developed something of a reputation for being able to kill unruly mages....

Charmcaster

By Sebastien De Castell

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Sea

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Soulbinder Spellslinger Book 4

By Sebastien De Castell

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Queenslayer

By Sebastien De Castell

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Knight s Shadow

By Sebastien De Castell

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Spellslinger 5

By Sebastien De Castell

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Spellslinger 4

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Shadowblack Book Two in the page turning new fantasy series Spellslinger

By Sebastien De Castell

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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.