David L. Katz Books

The 3-Hour Diet: How Low-Carb Diets Make You Fat and Timing Makes You Thin

By Jorge Cruise, David L. Katz

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The 3-Hour Diet: Lose up to 10 Pounds in Just 2 Weeks by Eating Every 3 Hours!

By Jorge Cruise

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Disease-Proof

By David L. Katz

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“If you want to build better health and a better future, this book makes an excellent tool kit.”—David A. Kessler, MD, author of The End of Overeating and former commissioner of the FDA It sometime...

Epidemiology, biostatistics, and preventive medicine

By James F. Jekel

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The Flavor Point Diet

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Cut Your Cholesterol

By Reader S Digest

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Flavour Point Diet

By David L. Katz

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When it comes to food, we all know when we should stop eating. Why then is that handful of crisps not enough? Why when we intend to eat just one slice of pizza do we end up having three? The answe...

Play Better Chess

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Nutrition in Clinical Practice

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Nutrition in Clinical Practice

By David L. Katz

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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.