David Jefferis Books

Trucks Monster Machines

By David Jefferis

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Hot Planets Mercury and Venus by David Jefferis

By David Jefferis

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Aircraft

By David Jefferis

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The history of optics

By Gill Lloyd

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Discusses the study of light, what it is made of, and how it is produced, transmitted, and measured, including the scientific advances that have been made in optics, and some of the scientists who...

Cars Extreme Machines

By David Jefferis

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Planes Extreme Machines

By David Jefferis

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Racing Cars Monster Machines

By David Jefferis

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Alligator Killer Creatures

By Tony Allan, David Jefferis

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Shark Killer Creatures

By Tony Allan, David Jefferis

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Snake Killer Creatures

By Tony Allan, David Jefferis

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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.