John Yudkin Books

The Penguin Encyclopedia of Nutrition Health Library

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More than 40 years before Gary Taubes published The Case Against Sugar, John Yudkin published his now-classic exposé on the dangers of sugar—reissued here with a new introduction by Robert H. Lusti...

Pure, White and Deadly: How Sugar Is Killing Us and What We Can Do to Stop It

By John Yudkin

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Nutrition

By John S. Yudkin

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The A-Z of slimming.

By John Yudkin

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Sugar

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Sweet and Dangerous

By John Yudkin

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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.