John Gilstrap Books

For Jonathan Grave and Gail Bonneville, the Crystal Sands Resort is the perfect getaway--until gunshots shatter the night. Wealthy guests are yanked out of their sleep, herded like animals, forced...

Crimson Phoenix

By John Gilstrap

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Against All Enemies

By John Gilstrap, Basil Sands

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Damage Control

By John Gilstrap, Basil Sands

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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.