John Gandon Books

The Companion Guide To Mainland Greece

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When Brian de Jongh's two classic Companion Guides, Southern Greece and Mainland Greece, were first published they were greeted with acclaim and immediately established themselves as essential guid...

Master Index To The Proceedings Of The Huguenot Society Of Great Britain And Ireland

By John Gandon, Huguenot Society Of Great Britain And Ireland

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The Companion Guide To Mainland Greece

By John Gandon, Brian De Jongh, Brian De Jongh, John Gandon

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The Companion Guide To Greece

By Brian De Jongh, Geoffrey Graham-Bell, John Gandon

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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.