Doctor Harmony Books

Jo, My Sad Hippo: A Book About Sadness: Volume 1

By Doctor, Harmony, Doctor Harmony, Written And Illustrated By Doctor Harmony

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Annotation. This is a fun, rhyming, educational book to help children learn about sadness and to develop skills to manage sadness. Find Jo hidden on each page for extra fun!. There are kids activit...

The Cat'S Got My Tongue- A Book About Shyness And Performance Anxiety

By Doctor Harmony

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This Is A Fun, Rhyming, Educational Book To Help Children Learn About Shyness And Performance Anxiety And To Develop Skills To Manage It. Find Matt, The Cat, Hidden On Each Page For Extra Fun!. The...

The Cat'S Got My Tongue- A Book About Shyness And Performance Anxiety

By Doctor Harmony

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When adults are not comfortable talking about and facing uncomfortable feelings, such as self-doubt, it is then difficult for their children to learn how to deal with these feelings constructively....

Kanga, My Dragon Of Anger: A Book About Anger

By Doctor Harmony

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This Is A Fun, Rhyming, Educational Book To Help Children Learn About Anger And To Develop Skills To Manage Anger. Find Kanga Hidden On Each Page For Extra Fun!. There Are Kids Activity Pages And A...

My Pet Monster- A Book About Worry (Building Resilience) (Volume 1)

By Doctor Harmony

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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.