Catherine S. Katz Books

Flavour Point Diet

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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...

Dr. David Katz s Flavor Full Diet

By Catherine S. Katz, David L. Katz

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The Flavor Point Diet

By David Katz MD MPH

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What if there were a weight-loss diet that allowed you to eat your favorite foods and be completely satisfied, without ever counting calories or restricting food groups again? What if this diet was...

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.