Roger J.C. Thomas Books

Cold War: Building For Nuclear Confrontation 1946-1989

By P.S. Barnwell, Roger J.C. Thomas, WAYNE D. COCROFT, Wayne Cocroft, Wayne D. Cocroft And Roger J.C. Thomas

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From 1947 the United States committed herself to the containment of communist expansion, through what became known as the Truman doctrine. From that date, until the early 1990s Britain and other We...

War Art

By Roger J. C. Thomas, Wayne D. Cocroft, Danielle Devlin, John Schofield

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Civil Defence from the First World War to the Cold War

By Roger J.C. Thomas

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York Cold War Bunker

By Roger J.C. Thomas, English Heritage Staff

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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.