Michael Haren Books

Medieval thought

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The emphasis (of this text) is on speculative thought, not however considered in the abstract but as manifesting the continuing vitality of an aspect of classical culture in the medieval world.

Sin and Society in Fourteenth-Century England A Study of the Memoriale Presbiterorum

By Michael Haren

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Medieval thought

By Michael J. Haren, Michael Haren

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Medieval Thought New Studies in Medieval History

By Michael Haren

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Medieval Thought (New Studies in Mediaeval History)

By Michael J. Haren, Michael Haren

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Medieval Thought

By Michael Haren

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An Introduction to Medieval and Renaissance Political Thought: From Ambrose and Augustine to Machiavelli and More

By M. Haren, Michael Haren

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Calendar of Papal Letters

By Michael Haren

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Medieval Thought

By Michael Haren

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Medieval Thought

By Michael Haren

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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.