Andy Heyward Books

Inspector Gadget

By Matthew Broderick, Andy Heyward, David Kellogg

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He may look like a mild-mannered detective, but Inspector Gadget is somewhere between a man and a machine, and he's out to clean up the city if he can keep all his many parts under control.

El Club Secreto de los Millonarios

By Amy Heyward, Manuel Cabedo Gimeno, Andy Heyward

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Secret Millionaires Club

By Amy Heyward, Andy Heyward

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Secret Millionaires Club

By Amy Heyward, Andy Heyward

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Secret Millionaires Club

By Amy Heyward, Andy Heyward

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Monster Mash VHS

By Judy Rothman Rofe, Andy Heyward, Alfio Bastiancich, Guido Manuli, Michael Maliani, Pam Arseneau, Robby London

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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.