Mark Ovenden Books

Transit Maps of the World

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A completely updated and expanded edition of the cult bestseller, featuring subway, light rail, and streetcar maps from New York to Nizhny Novgorod. Transit Maps of the World is the first and only...

Airline Maps

By Mark Ovenden, Maxwell Roberts

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A nostalgic and celebratory look back at one hundred years of passenger flight, featuring full-color reproductions of route maps and posters from the world's most iconic airlines, from the author o...

Airline Maps

By Mark Ovenden, Maxwell Roberts

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Great Railway Maps of the World

By Mark Ovenden

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Railway Maps Of The World

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Underground Cities

By Mark Ovenden

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Great Railway Maps Of The World

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London Underground By Design

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Since its establishment 150 years ago as the world's first urban subway, the London Underground has continuously set a benchmark for design that has influenced transit systems from New York to Toky...

Johnston and Gill

By Mark Ovenden

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Paris Mtro Style In Map And Station Design

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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.