Hal A. Huggins Books

Why raise ugly kids?

By Hal A. Huggins

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It's All in Your Head

By Hal A. Huggins

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Mercury is one of the world’s most poisonous substances, and yet dentists routinely use it in amalgams to fill our teeth. Forty years ago, Dr. Hal Huggins questioned this practice, and now le...

It s all in your head

By Hal A. Huggins

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Mercury and Other Toxic Metals in Humans Proceedings of the First International Conference on Biocompatiblity of Materials

By International Conference On Biocompatibility Of Materials 1st 1988 Colorado Springs Colo., Hal A. Huggins

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Your Goose Isn t Cooked... Yet

By Hal A. Huggins

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Solving the MS Mystery

By Hal A. Huggins

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Who Makes Your Hormones Hum

By Hal A. Huggins

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It's Right Under Your Nose

By Hal A. Huggins

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Uninformed Consent

By Thomas E. Levy, Hal Huggins

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Uninformed consent

By Hal A. Huggins

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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.