Ray Spangenburg Books

A comprehensive look at stars and their "life cycle," from human's earliest observations of the constellations to recent discoveries about black holes and future space missions to study our sun and...

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.

A Look at Comets Out of This World

By Diane Moser, Ray Spangenburg, Kit Moser

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Observing the Universe Out of This World

By Diane Moser, Ray Spangenburg, Kit Moser

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A Look at Mercury Out of This World

By Diane Moser, Ray Spangenburg

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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.