Thomas Christie Books

The Pentagon labyrinth

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This handbook aims to help newcomers as well as seasoned observers learn how to grapple with the problems of national defense, using insights our authors have gleaned in the course of their more th...

Global Alert

By Tom Christie, Thomas Christie

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Mysteries of Science

By Tom Christie, Thomas Christie

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More Mysteries of Science

By Thomas Christie

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The Analytical Review Or History of Literature Domestic and Foreign on an Enlarged Plan

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Brother of Mine

By Hampton Smith

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Notional identities

By Thomas A. Christie

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The Analytical Review, or History of Literature, Domestic and Foreign, on an Enlarged Plan, Volume 18

By Thomas Christie

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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.