Mac Barnett Books

Leo

By Mac Barnett, Christian Robinson

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Mac undercover

By Mac Barnett

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The precious Crown Jewels have been stolen, and there's only one person who can help the Queen of England: her newest secret agent, Mac B. Mac travels around the globe in search of the stolen trea...

The Wolf the Duck and the Mouse

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Sam Dave dig a hole

By Mac Barnett

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Sam and Dave are sure they will discover something exciting if they just keep digging their hole.

Triangle

By BARNETT KLASSE

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When master prankster Miles Murphy moves to sleepy Yawnee Valley, he challenges the local mystery prankster in an epic battle of tricks, but soon the two join forces to pull off the biggest prank e...

Guess again

By Mac Barnett

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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.