Clayton R. Newell Books

"This volume profiles the leaders and the accomplishments of the U.S. Army from the beginning of its 226-year history to the present. Entries on top military and civilian leaders, notable enemies,...

Lee vs. McClellan

By Clayton R. Newell

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In 1861, when the Civil War began, few generals on either side had experience commanding troop formations larger than a single regiment. In the rugged mountains and dense forests of western Virgini...

Lee vs. McClellan

By Clayton R. Newell

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Framework of Operational Warfare

By Clayton Newell

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Framework of Operational Warfare

By Clayton R. Newell

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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.