Tom Greenwald Books

My dog is better than your dog

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From the author of Charlie Joe Jackson's Guide to Not Reading comes a humorous and illustrated new series about a boy whose new dog may or may not be a crimefighting vampire.

It s a doggy dog world

By Tom Greenwald

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Bored by the lack of crime in Quietville lately, Jimmy's vampire dog, Abby, has chewed up his mother's entire shoe collection, and so his parents have insisted in enrolling Abby in obedience traini...

Dog Day After School

By Tommy Greenwald

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John Jen

By Lippa Andrew Greenwald Tom

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Essay writing strategies

By Tom Greenwald

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Charlie Joe Jackson s Guide to Not Growing Up

By Tommy Greenwald

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The Real Us

By Tommy Greenwald, J. P. Coovert

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A Zombie Ate My Homework

By Tommy Greenwald

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Rivals

By Tommy Greenwald

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John Jen

By Andrew Lippa

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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.