William G. Crook Books

The Yeast Connection

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An in-depth guide on how to suspect, identify, and over-come those health problems in people of all ages and sexes that can be traced to sensitivity to the yeast germ candida albicans. The Yeast Co...

The Yeast Connection and Women s Health

By William G. Crook, Carolyn Dean, Elizabeth B. Crook

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The Yeast Connection Cookbook

By William G. Crook, Marjorie Hurt Jones

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Tracking down hidden food allergy

By William G. Crook

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Yeast Connection

By William G. Crook

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Yeasts

By William G. Crook

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Yeast Connection

By William G. Crook

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Solving the puzzle of your hard-to-raise child

By William G. Crook

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The Yeast Connection

By William G. Crook

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Detecting Your Hidden Allergies

By William G. Crook

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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.