Julia Keller Books

Mr. Gatling's Terrible Marvel

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A provocative look at the life and times of the man who created the original weapon of mass destructionDrawing on her investigative and literary talents, Julia Keller offers a riveting account of t...

Mr. Gatling s Terrible Marvel

By Julia Keller

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The Dark Intercept

By Julia Keller

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The Dark Intercept

By Julia Keller

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Dark Mind Rising A Dark Intercept Novel The Dark Intercept Book 2

By Julia Keller

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Dark Mind Rising

By Julia Keller

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Dark Star Calling

By Julia Keller

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Mr. Gatling s Terrible Marvel The Gun That Changed Everything and the Misunderstood Genius Who Invented It

By Julia Keller

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A Killing in the Hills

By Julia Keller

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Bitter River

By Julia Keller

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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.