D. W. Rollason Books

Northumbria 5001100

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"This book deals with the development of Northumbria from the beginning of its history to the end, thereby offering a unique opportunity to study the rise and fall of a kingdom rather than just foc...

Anglo Norman Durham

By D. W. Rollason, Michael Prestwich, Margaret Harvey

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Saints and Relics in Anglo-Saxon England

By D. W. Rollason, David Rollason

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Durham Liber Vitae

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The Mildrith Legend

By D. W. Rollason

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Anglo Norman Durham

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Anglo Norman Durham 1093 1193

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The search for St. Wigstan, prince-martyr of the kingdom of Mercia

By D. W. Rollason

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Cuthbert saint and patron

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Early Medieval Europe 300 1050

By David Rollason

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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.