Cindy Marcus Books

"US A Teen History is a walk through American history, from Plymouth Rock to the internet, all told through the eyes of teenagers. This story theatre-style show is a compilation of scenes, songs, s...

Ghost of a Chance

By Flip Kobler, Cindy Marcus

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Wild Dust

By Flip Kobler, Cindy Marcus, Dennis Poore

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Wild dust

By Dennis Poore

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The ultimate young actor s guide

By Cindy Marcus

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Stagecraft for kids

By Cindy Kobler, Cindy Marcus

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Virtual Whodunnit

By Flip Kobler, Cindy Marcus

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War of the Worlds

By Flip Kobler, Cindy Marcus

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Christmas Virtually

By Flip Kobler, Cindy Marcus

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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.