David J. Eicher Books

The universe from your backyard

By David J. Eicher

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Galaxies and the Universe

By David J. Eicher

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Comets

By David J. Eicher

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"In this guide you will discover the cutting-edge science of what comets are, how they behave, where they reside, how groups of comets are related, and much more. The author carefully explores the...

The new cosmos

By David J. Eicher

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Mission Moon 3 D A New Perspective

By David Eicher

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Astrophotography

By Rhodri Evans, David J. Eicher

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Mission Moon 3 D

By Brian May, David J. Eicher

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Cosmic Clouds 3-D

By Brian May, David J. Eicher

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Amazing 3-D images take readers inside the birth and death of stars.This visually amazing volume, with text and 3-D images, takes readers inside the birthplace of stars—the cosmic clouds called neb...

Dixie Betrayed

By David J. Eicher

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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.