Timothy Good Books

A new exposé of the twentieth century's extraterrestrial visitations (and cover-ups) by distinguished UFologist Timothy Good. This volume tells the story of contact between aliens and humans from a...

Earth

By Timothy Good

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Earth An Alien Enterprise

By Timothy Good

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Some recent works

By T. E. Good

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Need to Know

By Timothy Good

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Thor's Man on Earth

By Wendelle Stevens, Valiant Thor, Timothy Good, Gray Barker, Lou Zinnstag

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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.