Robert Brentano Books

Rome before Avignon

By Robert Brentano

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Two Churches: England and Italy in the Thirteenth Century

By Robert Brentano

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Rome before Avignon

By Robert Brentano

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A new world in a small place

By Robert Brentano

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Robert Brentano has unearthed a cache of previously ignored documents that sheds light on the precise character of the church, religion, and society, and how they changed over a period of two centu...

Rome before Avignon

By Robert Brentano

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Rome Before Avignon

By Brentano

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The Prophetia Merlini of Geoffrey of Monmouth

By Howard Kaminsky, John Leyerle, Robert Brentano

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Early Middle Ages 5001000

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New World in a Small Place

By Robert Brentano

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New World in a Small Place

By Robert Brentano

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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.