David Hagberg Books

Tower down

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A freelance killer, code-named Al-Nassar, the Eagle, causes a pencil tower in Manhattan to fall. CIA agent Kirk Harvey suspects the Saudi Arabian government is behind it despite their status as US...

Flash points

By David Hagberg

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Retired CIA assassin Kirk McGarvey is taking a much needed break. Then a bomb in his car explodes just as he's leaving the vehicle. He barely escapes with his life. The men who went after McGarvey...

Flash Points

By David Hagberg

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Face off

By David Hagberg

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New York Times bestselling author David Hagberg is particularly adept at crafting compelling and timely thrillers. Face Off is no exception; this novel will appeal directly to his core audience, th...

McGarvey

By David Hagberg

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Gambit

By David Hagberg

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Traitor

By David Hagberg

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Assassin

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Victory Call to Arms

By Barrett Tillman, Stephen Coonts, David Hagberg

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The Kill Zone McGarvey

By David Hagberg

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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.