John Gilstrap Books

End Game A Jonathan Grave Thriller Book 6

By John Gilstrap

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No Mercy

By John Gilstrap

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Stealth Attack

By John Gilstrap

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  An electrifying new novel from the bestselling author of Crimson Phoenix, perfect for fans of Vince Flynn and Brad Thor! Black Ops veteran Jonathan Grave is back and pursuing two missin...

Crimson Phoenix

By John Gilstrap

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Brad Taylor meets The Stand in a riveting novel of suspense kicking off a brand new series perfect for fans of the page-turning novels of A.G. Riddle, Mark Greaney, and Matthew Mather. “One o...

Nathan's run

By John Gilstrap

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Nathan s Run

By John Gilstrap, George Guidall

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Six Minutes to Freedom

By John Gilstrap, Kurt Muse

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Six Minutes to Freedom

By John Gilstrap, Kurt Muse

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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.