Margaret Duffy Books

Murders.com

By Margaret Duffy

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Dust to Dust

By Margaret Duffy

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Rat poison

By Margaret Duffy

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When vicious gang warfare breaks out in the city of Bath, it soon becomes apparent that a London crime lord is trying to move in to the area. DCI James Carrick has to enlist help from the Serious O...

Corpse in waiting

By Margaret Duffy

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Meeting his old girlfriend Alexandra Nightingale while on vacation with his wife Ingrid Langley Patrick Gillard agrees to help Alexandra find a house which leads the sleuthing couple to a gruesome...

Hanging Matter

By Margaret Duffy

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Dead Trouble

By Margaret Duffy

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So Horrible a Place

By Margaret Duffy

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Rook-shoot.

By Margaret Duffy

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Man of blood

By Margaret Duffy

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Gallows Bird

By Margaret Duffy

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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.