John Prevas Books

Power Ambition Glory

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Based on an extraordinary collaboration between Steve Forbes, chairman, CEO, and editor in chief of Forbes Media, and classics professor John Prevas, Power Ambition Glory provides intriguing compar...

Hannibal Crosses the Alps

By John Prevas

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Envy of the Gods

By John Prevas

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Xenophon s March

By John Prevas

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Hannibal Crosses the Alps

By John Prevas

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Xenophon s March

By John Prevas

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El juramento de Anibal

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Hannibal's Oath: The Life and Wars of Rome's Greatest Enemy

By John Prevas

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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.