Eric W. Johnson Books

What We Knew
Teaching school
Teaching school

By Eric W. Johnson

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Older and wiser
Older and wiser

By Eric W. Johnson

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People, love, sex, and families
People, love, sex, and families

By Eric W. Johnson

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Answers 200 questions posed by preteens about love, sex, reproduction, contraception, divorce, rape, child abuse, and other topics.

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People, love, sex, and families
People, love, sex, and families

By Eric W. Johnson

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Answers 200 questions posed by preteens about love, sex, reproduction, contraception, divorce, rape, child abuse, and other topics.

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Treasury of Humor 2 Treasury of Humor
How to Achieve Competence in English
Stories in Perspective
Stories in Perspective

By Eric W. Johnson

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Quaker meeting
Quaker meeting

By Eric W. Johnson

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You Are the Editor Fearons Writing Skills Resource Pack

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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.

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