Roger Williams Books

Provence and Cote D Azur

By DK Publishing

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Top 10 London Top Ten Travel Guides

By Roger Williams, DK Publishing

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Barcelona Catalonia

By Roger Williams

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Eyewitness travel

By DK Publishing

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Recognized the world over by frequent flyers and armchair travelers alike, Eyewitness Travel Guides are the most colorful and comprehensive guides on the market. With beautifully commissioned photo...

London Eyewitness Travel Guides

By Williams Roger Leapman Michael DK Publishing

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London 2011

By Michael Leapman

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Barcelona & Catalonia

By Roger Williams

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France

By John Ardagh, Rosemary Bailey

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Describes the architecture, culture, and history of France; explores the highlights of each region of the country; and recommends hotels, restaurants, shops, sights, and scenic routes.

London

By Michael Leapman

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Filled with more than 1,200 full-color photographs, 3-D aerial views, street maps, district maps, and cutaways of famous buildings, these DK Eyewitness Travel Guides cover every aspect of the world...

DK Eyewitness Travel Guide

By Ian O Leary, Nick Inman, Mary Ann Gallagher, Roger Williams Undifferentiated

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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.