Michael Castleman Books

Making love

By Michael Castleman

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How to Last Longer and Other Sexual Solutions

By Michael Castleman

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There s Still a Person in There

By Michael Castleman, Dolores Gallagher Thompson, Matthew Naythons

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Before You Call the Doctor

By Michael Castleman, Anne Md Simons, Bobbie Hasselbring

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An A-to-Z reference to the essentials of good home health care for more than 300 ailments, symptoms, and health-related concernsBefore You Call the Doctor is easy to follow, and it’s organized to g...

Cold cures

By Michael Castleman

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The Healing Herbs

By Michael Castleman

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The Healing Herbs provides the information you need to use the earth's wonderful bounty of medicinal plants confidently, effectively, and above all, safely. It examines 100 of the most widely used,...

Nature s Cures

By Michael Castleman

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The New Healing Herbs

By Michael Castleman

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Discover how to get the most from nature’s oldest remediesIn this revised edition, The New Healing Herbs provides up-to-date profiles of 100 of the most widely used medicinal plants, detailing the...

Sexual solutions

By Michael Castleman

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Sexual Solutions

By Michael Castleman

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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.