Mark Thurston Books

Edgar Cayce l ame et son destin ou Le vrai sens de la vie

By Mark Thurston

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Soul Purpose

By Mark Thurston

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Self Hypnosis

By Mark Thurston, Edgar Cayce

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Edgar Cayce s Predictions For The 21st Century

By Mark Thurston

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The Essential Edgar Cayce

By Mark Thurston

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A complete guide to the work of the remarkable twentieth-century seer Edgar Cayce, featuring Cayce's most intriguing and influential readings, and a biographical introduction to his life. Edgar Ca...

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.