Bryan Denson Books

The spy's son

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Jim Nicholson was the highest-ranking CIA officer ever convicted of espionage. A single father, respected mentor and brilliant case officer, he was also a double agent selling thousands of state se...

Spy s Son

By Bryan Denson

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The spy s son

By Bryan Denson

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By day, he taught spycraft at the CIA's clandestine training center, The Farm. By night, he was a minivan-driving single father racing home to have dinner with his kids. But for more than two years...

Unabomber

By Bryan Denson

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Catching a Russian Spy

By Bryan Denson

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Catching a Russian Spy

By Bryan Denson

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Diamond Thieves

By Bryan Denson

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Uncovering a Terrorist

By Bryan Denson

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Spy s Son

By Bryan Denson

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The spy's son

By Bryan Denson

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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.