Lady Colin Campbell Books

Etiquette of Good Society

By Lady Colin Campbell

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Queen Mother

By Colin Campbell

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The queen mother

By Campbell Colin Lady

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Campbell shows us that the untold life of Elizabeth, the Queen Mother, is far more interesting and moving than the official version that has been peddled since 1923. Elizabeth's life has been fille...

Real Diana

By Colin Campbell

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Queen s Marriage

By Lady Colin Campbell

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Meghan and Harry

By Lady Colin Campbell

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Meghan and Harry

By Lady Colin Cambell

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Meghan and Harry

By Lady Colin Campbell

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Gentlewoman s Book of Sports

By Cecily Gayford

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Woman s Walks

By Cecily Gayford

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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.