Donald Lemke Books

Gulliver s Travels

By Jonathan Swift

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Zinc Alloy revealed

By Donald B. Lemke

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When Zack Allen reveals his secret superhero identity, everything in his life changes. Suddenly, he's the coolest kid at school and the world's greatest athlete. But can he compete without wearing...

Zinc Alloy revealed!

By Donald B. Lemke

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When Zack Allen reveals his secret superhero identity, everything in his life changes. Suddenly, he's the coolest kid at school and the world's greatest athlete. But can he compete without wearing...

Captured off guard

By Donald B. Lemke

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While camping out on the island of Oahu, Hawaii, Hank and his best friend, James, hear loud explosions. Suddenly, Japanese planes fill the sky. Pearl Harbor is under attack! James wants to hide, bu...

Captured off guard

By Donald B. Lemke

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Tony Hawk s 900 Revolution

By M. Zachary Sherman, Donald Lemke

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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.