Gregor Clark Books

Lonely Planet Argentina

By Carolyn McCarthy, Gregor Clark, Andy Symington, Sandra Bao, Lonely Planet, Lucas Vidgen

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10,000km of coastline, 70 pre-Hispanic ruins, 100 food & crafts markets, 50 fairs & festivals. Inspirational photos, clear, easy-to-use maps, pull-out city map, guide to ancient Mayan ruins, compre...

France

By Nicola Williams

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Full Colour, pull out sheetmap. Illustrated highlights cover Notre Dame, the Louvre, Versailles, Monte Carlo Casino, Marseilles Vieux Port, Mont St Michel. The plan. section features the following:...

Sicily

By Clark Gregor Travel Writer

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Brazil

By Regis St. Louis

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New England

By Mara Vorhees

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Italy

By Cristian Bonetto

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Discover Italy

By Abigail Hole

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Lonely Planet Southern Italy Travel Guide

By Gregor Clark, Helena Smith, Cristian Bonetto, Lonely Planet

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Switzerland

By Nicola Williams

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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.