Geoffrey M. Horn Books

Bible Stories for Children

By Geoffrey M. Horn

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Includes stories from both the Old and New Testaments.

John Brown

By Geoffrey M. Horn

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Examines the life of abolitionist John Brown, the people and events surrounding the raid he led on the United States arsenal at Harpers Ferry, West Virginia, in 1859, and its aftermath.

John Brown

By Geoffrey M. Horn

Average: 0.00, 0 Ratings

Examines the life of abolitionist John Brown, the people and events surrounding the raid he led on the United States arsenal at Harpers Ferry, West Virginia, in 1859, and its aftermath.

Old Testament

By Geoffrey M. Horn

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A guide to reading the Old Testament with a critical and appreciative mind. Includes sample tests, term paper suggestions, and a reading list.

Bob Dylan Trailblazers of the Modern World

By Geoffrey M. Horn

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Steven Spielberg Trailblazers of the Modern World

By Geoffrey M. Horn

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Theodore Roosevelt

By Geoffrey M. Horn

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Biography of the twenty-sixth president of the United States, discussing his personal life, education, and political career.

Colin Powell

By Geoffrey M. Horn

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Crime Scene Investigator Cool Careers

By Geoffrey M. Horn

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Crime Scene Investigator Cool Careers

By Geoffrey M. Horn

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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.