Harold Coyle Books

When the members of his special forces unit are captured and scheduled for execution deep in enemy territory, Lieutenant Colonel Harry Shaddock is charged with rescuing his men and completing their...

Against all enemies

By Harold Coyle

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They are soldiers

By Harold Coyle

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Cat and mouse

By Harold Coyle

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Frustrated that his unit is pursuing a goal that has nothing to do with their mission, soldier Nathan Dixon encounters political resistance while working to undermine a terrorist who would unite va...

Pandora s legion

By Barrett Tillman, Harold Coyle

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Prometheus s child

By Barrett Tillman, Harold Coyle

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When a military training mission in Chad is transformed into a high-stakes game of nuclear one-upmanship, the men and women of Strategic Solutions, Inc., a private paramilitary company, are called...

No warriors no glory

By Harold Coyle

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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.