Robert Royal Books

The Ethiopian Campaign And French Political Thought

By Anthony O. Simon, Robert Royal, A. James Mcadams, Yves R. Simon, Yves René Marie Simon, Yves R. Simon, Anthony O. Simon, Robert Royal, A. James McAdams

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"While it is true that Yves R. Simon did not intend this to be a history book, **__The Ethiopian Campaign and French Political Thought__** is an important historical work well deserving of a close...

American Catholics American Culture

By Margaret Steinfels

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Saint Thomas Aquinas, Vol. 1. The Person And His Work

By Robert Royal, Jean-Pierre Torrell

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Highly acclaimed as the most reliable, thorough, and accessible introduction to Thomas Aquinas, this first volume in Jean-Pierre Torrell's set of books on the great Dominican theologian has been re...

The Pope'S Army

By Robert Royal, Royal, Robert , 1949-

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With the election of Pope Benedict XVI, the world witnessed the pomp and honor of the Swiss Guard, the Popeâs Army. Now best-selling author and Crisis columnist Robert Royal takes us through the...

Christian Democrat International

By Roberto Papini, Papini Roberto

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Christian Democrat International

By Papini Roberto

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Challenge and Response

By Robert Royal

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Gaining Ground

By Cromartic

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The Hospitable Canon

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Columbus And The Crisis Of The West

By Robert Royal

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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.