Chris Grabenstein Books

Mind Scrambler: A John Ceepak Mystery

By Chris Grabenstein

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Hell Hole John Ceepak Mystery

By Chris Grabenstein

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I Even Funnier: A Middle School Story

By James Patterson, Laura Park, Chris Grabenstein

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Lights out

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"Daniel X is finally ready to take on the universe's most evil alien outlaw that killed his parents years ago, but he will need all his friends--and superpowers--to make it out alive"--

Daniel X Lights Out

By Chris Grabenstein

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"Following clues left by their missing father, twelve-year-old twins Bickford and Rebecca Kidd sail from the Caribbean to New York City with their siblings to finish the dangerous quest of their wo...

Treasure Hunters

By Juliana Neufeld, James Patterson, Mark Shulman, Chris Grabenstein

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Daniel X

By James Patterson, Chris Grabenstein

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Robots go wild

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"Fifth grader Sammy Hayes-Rodriguez has to find a solution when his robot 'brother' has repeated malfunctions at school and a newer model robot steps in as competition--and his mother's job is in j...

I Funny TV: A Middle School Story

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Wheelchair-bound middle school student Jamie Grimm's recent victory in the Planet's Funniest Kid Comic Contest leads to a television sitcom based on his life, but being the star of the show forces...

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.