Joanne Mattern Books

Guinness world records.

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"Ready to go wild? Stunning color photos bring you up close to 25 animal record-breakers! Inside, you can explore the wild kingdom by racing against the fastest-swimming bird, visiting the nest o...

Guinness world records.

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Describes some of the world's most shocking people, strangest plants, and weirdest animals.

Young Martin Luther King Jr

By Joanne Mattern

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A simple biography of a great black leader emphasizing his dream of equal treatment for all Americans.

Marie Curie, brave scientist

By Joanne Mattern

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Maya Miguel

By Mary Gruetzke, Joanne Mattern

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Maya finds a special hat the day before Easter, but will it really bring her good luck?

Good Night Bear

By Joanne Mattern

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Albert Einstein Easy Bio

By Laurence Santrey

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Helen Keller

By Meyer Jean, Joanne Mattern, Francene Sabin

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The Coyote Wildlife of North America

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Ninjas

By Joanne Mattern

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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.