Betsy Duffey Books

The Camp Knock Knock mystery

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If Willie would change into clean clothes while at summer camp, he may find the joke book which Crow has hidden from him.

Alien for rent

By Betsy Duffey

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When a small fuzzy alien appears at their school, third graders J.P. and Lexie accidentally direct his powers against the bully Bruce and things get out of control.

Camp Knock Knock Level 4

By HOUGHTON MIFFLIN

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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.

The Camp Knock Knock mystery

By Betsy Duffey

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If Willie would change into clean clothes while at summer camp, he may find the joke book which Crow has hidden from him.

Alien for rent

By Betsy Duffey

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When a small fuzzy alien appears at their school, third graders J.P. and Lexie accidentally direct his powers against the bully Bruce and things get out of control.

How To Be Cool in the Third Grade

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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.