Susan Wyler Books

The Swiss Secret to Optimal Health

By Susan Wyler, Rau Thomas M.D., Thomas Rau

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The Swiss Secret to Optimal Health

By Susan Wyler, Mark Hyman, Thomas Rau

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Now in paperback: a world-renowned physician shares the secrets that draw international clients to his clinic. For almost 50 years, people have traveled to the Paracelsus Clinic in the Swiss Alps....

Lucky Billy

By John Vernon, Susan Wyler

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Lucky Billy

By John Vernon, Susan Wyler

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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.