Betsy Duffey Books

How to Be Cool in the Third Grade

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My dog, my hero

By Betsy Cromer Byars

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A panel of three judges has to decide which dog out of eight finalists deserves to win the title of My Hero.

Dog diaries

By Betsy Duffey, Laurie Myers, Betsy Cromer Byars

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At the first annual meeting of WOOF--Words of Our Friends--assorted dogs preserve their heritage by sharing tales of canines throughout history, including Abu, who ruled all of Egypt except for one...

The SOS file

By Betsy Cromer Byars

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The students in Mr. Magro's class submit stories for the SOS file about their biggest emergencies, and then they read them aloud for extra credit.

More Peace

By Betsy Duffey

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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.