Peter Linehan Books

History and the Historians of Medieval Spain

By Peter Linehan

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The ladies of Zamora

By Peter Linehan

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The Ladies of Zamora is the story of a convent of nuns in a thirteenth-century Spanish city, their battles with the bishop, their altogether friendlier relationship with the local Dominican friars...

The Medieval World

By Janet L. Nelson, Peter Linehan

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The Medieval World

By Peter Linehan

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The Spanish Church and the Papacy in the Thirteenth Century

By Peter Linehan

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The Spanish Church and the Papacy in the Thirteenth Century

By Peter Linehan

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Spain 1157 1300

By Peter Linehan

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The ladies of Zamora

By Peter Linehan

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Spanish church and society, 1150-1300

By Peter Linehan

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The Processes of Politics and the Rule of Law

By Peter Linehan

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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.