Letha Hadady Books

Three in Love: Menages a Trois from Ancient to Modern Times

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Barbara Foster, Michael Foster, and Letha Hadady are writers and scholars who themselves are involved in an ongoing, loving partnership and are thus remarkably well suited as commentators on this u...

Three in Love

By Barbara M. Foster, Michael Foster, Letha Hadady

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Herbal Secrets for Total Health

By Letha Hadady

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Healthy Beauty

By Letha Hadadi, Letha Hadady

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Asian Health Secrets: The Complete Guide to Asian Herbal Medicine

By Letha Hadady

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Three in Love

By Barbara M. Foster, Michael Foster, Letha Hadady

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Healthy Beauty

By Letha Hadady

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Personal Renewal: Your Guide to Vitality, Allure, and a Joyful Life Using Healing Herbs, Diet, Movement, and Visualizations

By Letha Hadady

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Asian Health Secrets

By Letha Hadadi, Letha Hadady, Letha Hadady D.Ac.

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Asian Way of Wellness is the first interactive guide to herbal medicine, presenting breakthrough guidelines for self-diagnoses that help readers understand how to evaluate their personal health nee...

Personal Renewal

By Letha Dac Hadady

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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.