Pat Southern Books

The Roman Army: A Social and Institutional History

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Domitian was only nineteen when he made his first appearance in the senate. It was also his first meeting with the men who were to bring about his downfall. Following his assassination in 96 AD aft...

Domitian

By Pat Southern

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Augustus

By Pat Southern, Patricia Southern

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The Roman Cavalry

By Karen R. Dixon

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The Late Roman Army

By Karen R. Dixon

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The Roman Empire from Severus to Constantine

By Pat Southern

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The Roman Empire from Severus to Constantine

By Pat Southern

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Augustus Roman Imperial Biographies Roman Imperial Biographies

By Pat Southern

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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.