Gail Armstrong Books

The stress-heart disease connection

By Gail Armstrong

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L Espai

By Gail Armstrong, Lluisa Moreno Llort, Ruth Simmons

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Paper World: Human Body

By The Templar Company LTD Illustrated By Gail Armstrong

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This paper-cut book brings anatomy to life!Paper World: Human Body uses ingenious paper cut-outs to reveal the wonders of the human body, from taking a closer look at the inner workings of your bra...

Paper World: Space

By The Templar Company LTD

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This one-of-a-kind paper-cut book brings space to life!Paper World: Space uses ingenious paper cutouts to reveal the wonders of space, from the planets that make up our solar system to distant gala...

Reset Your Health Naturally

By Gail Armstrong

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Reset Your Health Naturally

By Gail Armstrong

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Reset Your Health Naturally

By Gail Armstrong

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Paper World

By Gail Armstrong, Ruth Symons

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Paper World Ocean

By Gail Armstrong, Ruth Symons

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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.