Christopher Tyerman Books

Crusading fervor gripped Europe for more than 200 years, creating one of the most extraordinary episodes in world history. But were the Crusades the first steps in European colonialism, an attempt...

The Practices Of Crusading Image And Action From The Eleventh To The Sixteenth Centuries

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"The crusades influenced western European society in the middle ages far beyond the military campaigns themselves. Reactions and involvement did not always follow the assumptions of ideology or sup...

How to plan a crusade

By Christopher Tyerman

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How to Plan a Crusade

By Christopher Tyerman

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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.