Walter M. Bortz Books

The Roadmap to 100

By Randall Stickrod, Walter M. Bortz II MD

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We Live Too Short and Die Too Long

By Walter Bortz

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“Here is a book on health that puts it all together—a book that gives you the feeling that a personal friend is sharing things of great value with you.”—Norman Cousins, author of Anatomy of an Illn...

Occupy medicine

By Walter M. Bortz

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Dare To Be 100: 99 Steps To A Long, Healthy Life

By Walter M. Bortz

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Living Longer for Dummies

By Rich Tennant, Walter M. Bortz

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Diabetes weight loss system

By Walter M. Bortz

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Diabetes Weight Loss System

By Patricia Mathis, Sharon Bortz, Walter Bortz

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Diabetes Danger

By Walter M. Bortz II, Walter M. Bortz

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Next Medicine: The Science and Civics of Health

By Walter M. Bortz

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Next Medicine

By Walter Bortz

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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.