Caragh M. O Brien Books

Promised

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Gaia succeeds in leading her people to Wharfton and the Enclave, but rebellion there threatens them all just when everything they have dreamed of seems to be at hand.

Promised

By Caragh M. O Brien

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Vault of Dreamers

By Caragh M. O Brien

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The rule of mirrors

By Caragh M. O Brien

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"Rosie has escaped Forge School but finds herself trapped in the body of another girl"--

Rule of Mirrors

By Caragh M. O Brien

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Keep of Ages

By Caragh M. O Brien

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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.