Charlotte Greig Books

Africa Cultures and Costumes

By Charlotte Greig

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Native Americans Cultures and Costumes Symbols of Their Period

By Robert L. Humphrey, Charlotte Greig

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Andrew Peterson Clear to Venus

By Andrew Peterson

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Cold Cases

By Charlotte Greig

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History's most infamous killers are often the most elusive. Cold cases recounts in fascinating detail the story of how these crimes have been solved and, in some cases, wrongfully convicted people...

Serial Killers and Psychopaths

By Greig Charlotte And Marlowe John

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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.