Dan Fesperman Books

Once Darwin Cole was an F-16 fighter pilot, a family man. Now he's a dishonorably discharged washout drunk living alone in the Nevada desert, haunted by one of his last missions as "pilot" of a Pre...

Lie in the Dark

By Dan Fesperman

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Vlado Petric is a homicide investigator in war-torn Sarajevo. When he encounters an unidentified body near “sniper alley,” he realizes that it is the body of Esmir Vitas, chief of the I...

Safe Houses

By Dan Fesperman

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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.