Jeremy Duns Books

"In July 1945, MI6 agent Paul Dark took part in a top-secret mission to hunt down and execute Nazi war criminals. He will discover that everything he understood about that mission, its consequences...

The Dark Chronicles

By Jeremy Duns

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It's 1969, and MI6 agent Paul Dark has spent the last twenty-five years betraying his country. When a would-be Russian defector turns up with information about a high-level British double agent, Da...

Paris Trap

By Joseph Hone, Jeremy Duns

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Paris Trap

By Joseph Hone, Jeremy Duns

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Flowers of the Forest

By Joseph Hone, Jeremy Duns

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Valley of the Fox

By Joseph Hone, Jeremy Duns

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Private Sector

By Joseph Hone, Jeremy Duns

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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.