Robert Royal Books

Jacques Maritain and the Jews (American Maritain Association Publications)

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Jacques Maritain, one of the most prominent twentieth-century Catholic philosophers and social theorists, played a crucial role in the development of modern Catholic teaching about the people of Is...

The Ethiopian campaign and French political thought

By Yves Rene Marie Simon

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American Catholics American Culture

By Robert Royal

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Reinventing the American People

By Robert Royal

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Many of our old public expectations - our shared assumptions and experiences, respect for the rule of law and limited government, and, ultimately, a common morality and basic religious outlook - se...

The Virgin and the Dynamo

By Robert Royal

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Catholic Martyrs of the Twentieth Century

By Royal Robert, Robert Royal

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The Pope's army

By Robert Royal

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The Catholic Martyrs of The Twentieth Century

By Robert Royal

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Dante Alighieri

By Robert Royal

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Challenge and Response

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.