Henry Dillon Books

British Citizenship Test British Citizenship Test Study Materials

By Henry Dillon

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Life in the UK test practice questions

By Erwan Pirou, Henry Dillon, Alastair Smith

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Life in the UK Test Practice Questions

By George Sandison

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Life in the UK Test Study Guide

By George Sandison

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Handbook 2013

By George Sandison, Henry Dillon

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Contains the latest official materials, including everything required for study, in a simple and easy-to-learn format. Valid for tests taken from 25 March 2013.

Life in the UK test

By George Sandison, Henry Dillon

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Life in the UK test

By George Sandison, Henry Dillon

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Life in the UK test

By George Sandison, Henry Dillon

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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.