R. Thomas Campbell Books

Engineer in gray

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"James Hamilton Tomb devoted almost 12 years of his life to wartime naval service. A steam engineer by profession and a torpedo expert by circumstance, Tomb was in the forefront of naval weapons te...

Midshipman in gray

By Morgan James Morris

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Midshipman in Gray makes available to the modern reader the first twenty-eight chapters of James Morris Morgan's book, Recollections of a Rebel Reefer. Morgan was involved in many exploits during t...

Southern service on land & sea

By Watson Robert

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"Many men distinguished themselves on either land or sea during the Civil War. Robert Watson's service to the Confederacy included stints in both the army and navy, and his story brings a vital new...

Voices of the Confederate Navy

By R. Thomas Campbell

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Engineer in Gray

By James H. Tomb, R. Thomas Campbell

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Confederate Naval Forces on Western Waters

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Confederate Ironclads at War

By R. Thomas Campbell

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Voices of the Confederate Navy

By R. Thomas Campbell

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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.