John J Nance Books

In the skies above Europe, a Boeing 737 jets toward an unknown destination. On board is John Harris—a fugitive from justice. Charged by an international accord of ordering the torture of hundreds o...

Pandora s Clock

By John Nance

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Fire flight

By John J. Nance

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Scorpion Strike

By John J. Nance

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Silent Knights

By Alan E. Diehl

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Medusa s Child

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Last Hostage The

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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.