Jeffrey Lee Books

True Blue

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Molly's life was turned upside down by the car accident that injured her and crippled her father, but at her new middle school she teams up with a weird misfit for a science competition and makes a...

Catch a Fish, Throw a Ball, Fly a Kite

By Jeffrey Lee

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Knowing how to fold a paper airplane can make you a better parent!Well, maybe not better, but you’ll certainly have more fun with your children, who understandably assume that you know how to...

Manifolds and differential geometry

By Jeffrey Lee

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LaCour: The Awakening

By Patrick Carter, Jeffrey Lee

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ICESat (GLAS) Science Processing Software Document Series, Volume 3: GLAS Science Software Requirements Document, Ver 2.1

By Jeffrey Lee, Peggy L. Jester

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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.