Robin Johnson Books

Endangered butterflies

By Bobbie Kalman

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Endangered Penguins Earth s Endangered Animals

By Bobbie Kalman, Robin Johnson

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Endangered butterflies

By Bobbie Kalman

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Jaguar Superstar Cars

By Robin Johnson

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Koalas and other marsupials

By Bobbie Kalman

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Describes koalas, kangaroos, Tasmanian devils and other mammals with pouches using interesting facts and photos that highlight this group of animals, most of whom live in Australia.

William Shakespeare

By Robin Johnson

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William Shakespeare Crabtree Chrome

By Robin Johnson

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What Is a Blizzard

By Robin Johnson

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What Is a Hurricane

By Robin Johnson

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What Is a Thunderstorm Severe Weather Close up

By Robin Johnson

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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.