Cassandra Clark Books

The red velvet turnshoe

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Black February 1383: rain started to fall before Martinmas. It brought floods, famine and finally death. Into this watery world, against the backdrop of plague and war, the nun, Hildegard, is sent...

Dragon of Handale

By Cassandra Clark

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Velvet Turnshoe

By Cassandra Clark

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Graveyard Alley

By Cassandra Clark, Abigail Marie, C. L. Giles

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Hangman Blind

By Cassandra Clark

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Hangman Blind

By Cassandra Clark

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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.