Derryl Murphy Books

Wasps at the Speed of Sound
Wasps At The Speed Of Sound
Over the Darkened Landscape
Wasps at the Speed of Sound
Clarkesworld Issue 144
Compostela Tesseracts Twenty
Cast a cold eye
Cast a cold eye

By Derryl Murphy

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Napier s bones
Napier s bones

By Derryl Murphy

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In a world where numbers are magic, Dom searches for an item of immense power while on the run from a powerful enemy.

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Napier s Bones
Napier s Bones

By Derryl Murphy

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Cast a Cold Eye
Cast a Cold Eye

By Derryl Murphy, William Shunn

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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.

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