Roberts Katherine Books

Crystal Mask Echorium Sequence

By Roberts Katherine

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Mama Rex and T

By Rachel Vail, Roberts Katherine

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Spell Wars

By Roberts Katherine

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Sword of light

By Roberts Katherine

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This is paperback edition of Sword of Light by Katherine Roberts. We meet Rhianna Pendragon as she finds out King Arthur has been killed by the evil Mordred, his wicked nephew. She also finds out t...

Sword of light

By Roberts Katherine

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Songquest

By Roberts Katherine

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Song Quest

By Roberts Katherine

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Song Quest

By Roberts Katherine

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Spell Fall

By Roberts Katherine

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The Crystal Mask The Echorium Sequence

By Roberts Katherine

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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.