Spangenburg Ray Books

Carl Sagan

By Spangenburg Ray

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A look at Mars

By Diane Moser, Ray Spangenburg, Spangenburg Ray, Kit Moser

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Discusses the history of human ideas about Mars, its geology and moons, missions to the Red Planet, and the possibility of life on Mars.

The Sun

By Spangenburg Ray

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Meteors meteorites and meteoroids

By Moser Kit, Diane Moser, Ray Spangenburg, Spangenburg Ray, Kit Moser

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Explores the mysteries of rocks that travel vast distances through space, sometimes passing through Earth's atmosphere and sometimes landing on the surface.

The survival kit for Apple computer games

By Spangenburg Ray

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The Kilobyte Kid's book of personal computers

By Spangenburg Ray

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Introduces the various kinds of personal computers, explaning how they work and what they do.

Personal word processing

By Spangenburg Ray

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Educational software

By Spangenburg Ray

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Civil liberties

By Spangenburg Ray

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The crime of genocide

By Spangenburg Ray

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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.