J. C. Greenburg Books

Under water

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Andrew, his cousin Judy, and Thudd the robot accidentally set off in Uncle Al's latest invention, a Volkswagen Beetle converted for deep sea exploration, and try to prevent the evil Soggy Bob from...

In the whale

By J. C. Greenburg

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While trying to recover from their accidental underwater adventure, Andrew, his cousin Judy, and Thudd the robot are swallowed by a blue whale, the world's largest creature.

In Time

By J.C. Greenburg

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On Earth

By J.C. Greenburg

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With the Dinosaurs

By J.C. Greenburg

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Andrew Lost 12: In the Ice Age

By J.C. Greenburg

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Andrew Lost With Bats

By J.C. Greenburg

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In the Jungle A Stepping Stone Book TM

By J.C. Greenburg

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In Uncle Al AL 16 A Stepping Stone Book TM

By J.C. Greenburg

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Andrew Lost 17

By J.C. Greenburg

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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.