Richard Fletcher Books

Trade union rules

By Richard Fletcher

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Bloodfeud: Murder and Revenge in Anglo-Saxon England

By Richard Fletcher

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The Cross and the Crescent

By Richard Fletcher

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In this immensely readable history that couldn’t be more timely, award-winning historian Richard Fletcher chronicles the relationship between Islam and Christianity from the time of Muhammad to the...

The Quest for El CID

By R. A. Fletcher

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Bloodfeud: Murder and Revenge in Anglo-Saxon England

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Intelligence and intelligence testing

By John Hattie

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"Have you ever wondered what IQ is and how it is measured? Why is there such a premium placed on high IQ? What do we mean by intelligence? What does your IQ score mean? There can be no denying the...

The Crescent and Cross Universal History

By Richard Fletcher

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Moorish Spain

By R. A. Fletcher

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The Quest for El Cid

By Richard Fletcher, R. A. Fletcher

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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.