Alan W. Barclay Books

The good carbs cook book

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100+ simple, delicious and satisfying recipes to keep you feeling fuller for longer. Good carbs are essential. They supply the feel-good, taste-good fuel to keep you strong, boost your energy and h...

The ultimate guide to sugars sweeteners

By Alan W. Barclay

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"Today's supermarkets and natural food stores feature a bewildering variety of sugars and alternative sweeteners. The deluge of conflicting information doesn't help. Consumers are left to wonder: w...

Ultimate Guide to Sugars and Sweeteners

By Jennie Brand Miller, Philippa Sandall, Claudia Shwide Slavin, Alan Barclay

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Reversing Diabetes

By Alan Barclay

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Good Carbs Cookbook

By Philippa Sandall, Kate McGhie, Alan Barclay

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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.