Roger Bruns Books

Traces the life of the renowned bandit, from his childhood in Missouri, through his years as guerrilla fighter and outlaw, exploring the development of his legend and the romanticization of his ill...

Billy the Kid

By Roger Bruns

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Examines the life and illegal exploits of Billy the Kid, an infamous bandit of the Old West.

Almost history

By Roger Bruns

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Almost history

By Roger Bruns

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Thomas Jefferson World Leaders Past and Present

By Roger Bruns

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Abraham Lincoln World Leaders Past and Present

By Roger Bruns

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Thomas Jefferson

By Roger Bruns

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George Washington World Leaders Past and Present

By Arthur M. Schlesinger Jr., Roger Bruns

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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.