Kathryn R.Simpson Books

MS Solution

By M.S. Kathryn R. Simpson

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Overcoming Adrenal Fatigue: How to Restore Hormonal Balance and Feel Renewed, Energized, and Stress Free

By Kathryn R. Simpson

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Your adrenal glands play a key role in helping you control stress and maintain energy throughout the day. When these small but important glands malfunction, you may start to notice the telltale sig...

Solutions a Tous Vos Problemes de Glande Thyroide

By N A

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The Women'S Guide To Thyroid Health

By Kathryn R.Simpson, Kathryn Simpson, Thierry Hertoghe, Kathryn R Simpson MS, Thierry Hertoghe MD

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You're already an expert on your thyroid symptoms. Why not become an expert on solutions? Although your doctor is an invaluable resource, taking charge of your health care is the best way to discov...

Overcoming Adrenal Fatigue

By Kathryn Simpson

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The Women'S Guide To Thyroid Health: Comprehensive Solutions For All Your Thyroid Symptoms

By Kathryn R.Simpson, Kathryn Simpson, Thierry Hertoghe, Kathryn R Simpson MS, Thierry Hertoghe MD

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Perimenopause and Menopause Workbook

By Dale Bredesen, Kathryn Simpson

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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.