David Leffman Books

The Rough Guide to Australia is your indispensable guide to one of the most unforgettable countries on earth. This title is packed with practical information on Australian once-in-a-lifetime experi...

The rough guide to Hong Kong Macau

By Jules Brown

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This travel guide includes full details of Hong Kong harbour, its shopping and nightlife districts, traditional sites and off-the-beaten track areas of the New Territories and outlying islands.

The rough guide to Iceland

By David Leffman

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This guide to Iceland gives information on hotels, hostels and camping, and covers sites and stories of Viking sagas. There is advice on swimming in hot springs, climbing volcanoes, and tackling th...

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.