JOHN KEEGAN Books

War at Sea 1914-1945 (Smithsonian History of Warfare), The

By Bernard Ireland

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One Day in History: The Days that Changed the World, December 7, 1941

By Rodney P. Carlisle

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john Keegan Marshals A Formidable Host Of War Writings To Chronicle The Evolution Of Western Warfare Through The Voices Of Its Most Eloquent Participants. From Thucydides' Classic Account Of Ancien...

Undertones of War

By Edmund Blunden

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The man who was Thursday

By Gilbert Keith Chesterton

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The Lost World

By Arthur Conan Doyle

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Who's Who in World War II

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The Mask of Command

By John Keegan

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Churchill's Generals

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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.