Ellie Campbell Books

When Good Friends Go Bad

By Ellie Campbell

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Million Dollar Question

By Ellie Campbell

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When Good Friends Go Bad

By Ellie Campbell

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How to Survive Your Sisters

By Ellie Campbell

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Meddling with murder

By Ellie Campbell

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Crouch End Confidential, the agency started by housewife and mother Cathy O'Farrell, with ex-cleaner, Pimple, is failing badly. Hardly surprising when Cathy is too soft-hearted to charge their only...

How To Survive Your Sisters

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How To Survive Your Sisters

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How to Survive Your Sisters

By Ellie Campbell

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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.