Charles E. Gannon Books

Cyrocelled for twelve years, Caine Riordan wakes up to a different world and embarks on a mission to investigate whether primitive beings in Delta Pavonis were once sentient life forms, but someone...

Trial by fire

By Charles E. Gannon

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"When interstellar diplomat and intelligence operative Caine Riordan returns from humanity's first encounter with aliens, war erupts. With Earth's fleet shattered by a sneak attack and its survivor...

1636

By Eric Flint

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"New York Times and Wall Street Journal best-selling alternate history series. Book #14 in the Ring of Fire series created by Eric Flint. Eddie Cantrell, now married to the king of Denmark's daught...

Darktek

By Charles E. Gannon

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Behind the shadows of our world, the Dark Ones lurk, plotting humanity's ruin. Their Dark Minions stalk us, armed with horrific devices, the products of strange and hideous sciences. Human agents c...

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.