John Sheldon Books

Commando Helicopter Aircrewman

By John Sheldon

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Commando Helicopter Aircrewman

By John Sheldon

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Commentary on George Coedes Texts of Greek and Latin Authors of the Far East

By John Sheldon

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"This is a companion volume to 'Texts of Greek and Latin Authors on the Far East' (Brepols 2010) originally compiled by George Coedès and recently translated by John Sheldon. There are nearly one h...

She Of Strangeness

By John Sheldon

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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.