David Leffman Books

The rough guide to Malaysia Singapore and Brunei

By David Leffman

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The Rough Guide to Iceland

By David Leffman

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Reykjavik

By David Leffman

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Pocket Rough Guide Hong Kong & Macau

By David Leffman

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This guidebook includes the lowdown on the shopping opportunities and cutting-edge architecture of Hong Kong's downtown, parks, and harborside cityscapes - all existing alongside traditional temple...

The Rough Guide to the Lake District

By Jules Brown

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The rough guide to Beijing

By David Leffman

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The rough guide to China

By Simon Lewis, Joanna James, Young Charles Travel Guide Writer, David Leffman, Bird Thomas Travel Writer, Martin Zatko, Stuart Butler, Mark South

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This guide to China enables you to explore the sights and attractions of the country, offers advice on where to stay and eat, and comments on China's history, politics, environment, and people.

Reykjavik

By David Leffman

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Islandia

By DK

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China Eyewitness Travel Guides

By DK Publishing

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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.