Erika Schwartz Books

Introduces a thirty-day regimen to help women feel younger, without the dangers of hormone replacement therapy, integrating a natural hormone program, dietary advice, and tips on vitamins, exercise...

The Hormone Solution

By Erika Schwartz

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The 30 Day Natural Hormone Plan

By Erika Schwartz

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THE 30-DAY NATURAL HORMONE PLAN

By Erika Schwartz

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Don t let your doctor kill you

By Erika Schwartz

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Take charge of your health and stop turning over your life to our confusing and intimidating healthcare system - before it's too late. Dr. Erika Schwartz believes that today's patient is but a lea...

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.