Charles E. Gannon Books

Marque of Caine

By Charles E. Gannon, Kevin Pariseau

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The Best of Defending the Future

By Jack McDevitt, Charles E. Gannon, Mike McPhail

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Lost Signals

By Doug Dandridge, Charles E. Gannon, Joelle Presby, Kacey Ezell, Alex Shvartsman, Marc Miller, Walter Hunt, Mike Massa, Lawrence Schoen, Tom Doyle

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At the End of the World

By Charles E. Gannon

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Rumors of War and Infernal Machines

By Charles E. Gannon

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Humans and their allies unite to stop an alien invasion of Earth, while the the aliens, who believe in reincarnation and are unafraid of dying, make a brutal attack on the planet, helped by their a...

Man Kzin wars XIII

By Hal Colebatch, Larry Niven

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1635

By Eric Flint, Charles E. Gannon

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Raising Caine

By Charles E. Gannon

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Marque of Caine

By Charles E. Gannon

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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.