Judith Hayes Books

Forever After

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"When Judith Hayes started writing her monthly Internet column, The Happy Heretic, in 1996, she never imagined how great the response would be. Within the first year, she received e-mail messages f...

In God We Trust

By Judith Hayes

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Human Anatomy Colouring Workbook for Medical Students and Nurses

By Judith Hayes, Kim Jackson

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Sabian Symbols Visually

By Judith Hayes

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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.