Stella Duffy Books

The purple shroud

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Once, Theodora was little more than a slave, the daughter of a bear-keeper, running barefoot through the streets of Constantinople. Now she is Theou doron, the Gift of God, Empress of Byzantine Rom...

Theodora

By Stella Duffy

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The purple shroud

By Stella Duffy

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Theodora

By Stella Duffy

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State of happiness

By Stella Duffy

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Theodora

By Stella Duffy

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The room of lost things

By Stella Duffy

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Theodora

By Stella Duffy

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Theodora

By Stella Duffy

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The purple shroud

By Stella Duffy

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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.