David Crouch Books

The Beaumont Twins: The Roots And Branches Of Power In The Twelfth Century

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This book combines a simple dual biographical study of Waleran of Meulan and Robert of Leicester, the twin sons of Robert, Count of Meulan and Earl of Leicester, with an exploration of the exercise...

Normandy and its neighbours 900 1250

By David Crouch, Kathleen Thompson, Bates David

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Chivalric Turn

By David Crouch

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The Chivalric Turn: Conduct And Hegemony In Europe Before 1300

By David Crouch, David Crouch

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The Chivalric Turn examines the medieval obsession with defining and practising superior conduct, and the social consequences that followed from it. Historians since the seventeenth century have te...

Media and the Tourist Imagination

By David Crouch, Rhona Jackson, Felix Thompson

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English Aristocracy 1070 1272

By David Crouch

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Image of Aristocracy

By David Crouch

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Beaumont Twins

By David Crouch

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Medieval Britain C. 1000 1500

By David Crouch

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Medieval Britain C. 1000 1500

By David Crouch

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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.