Cynthia MacGregor Books

Refuse to use

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A simplified discussion of drugs, including alcohol, cigarettes, marijuana, and other substances, explaining what they are and why they can be addictive, discussing their effects on the body and br...

Refuse to use

By Cynthia MacGregor

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Mommy, there's nothing to do!

By Cynthia MacGregor

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Free Family Fun

By Cynthia MacGregor

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Totally terrific family games

By Cynthia MacGregor

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Totally Terrific Famj

By Cynthia MacGregor

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Dora s book of manners

By Christine Ricci

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Dora and Boots help Mr. Troll mind his manners.

Night Night

By Cynthia Macgregor

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What Do You Know About Manners

By Cynthia MacGregor

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Think for Yourself

By Cynthia MacGregor

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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.