Tony Holmes Books

Spitfire

By Tony Holmes, John Dibbs

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Twelve to One V Fighter Command Aces of the Pacific Aircraft of the Aces

By Tony Holmes

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US Navy Hornet Units of Operation Iraqi Freedom Part One Combat Aircraft

By Tony Holmes

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F 14 Tomcat Units of Operation Enduring Freedom Combat Aircraft

By Tony Holmes

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Fighter pilots are the elite of the elite. It can take years of training to produce a fighter pilot and even longer to produce a plane that is worthy of their skills. Yet a dogfight can last only m...

F 4 Phantom II

By Tony Holmes

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Hurricane Aces 1939 40 Aircraft of the Aces

By Tony Holmes

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USAF for the 21st Century

By James Benson, Tony Holmes, Jim Benson

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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.