David Hagberg Books

High Flight

By David Hagberg

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Crossfire

By David Hagberg

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White House

By David Hagberg

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A nuclear explosion off the coast of North Korea creates a political crisis in the Far East, and the White House sends CIA operative Kirk McGarvey to diffuse it. A tale of terrorism and internation...

The Kill Zone

By David Hagberg

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Countdown

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Without Honor

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.