Mark Littmann Books

Comet Halley

By Mark Littmann

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Totality

By Fred Espenak, Mark Littmann

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Totality

By Mark Littmann

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A complete guide to solar eclipses for the general public with detailed coverage of the 2017 and 2024 total eclipses over the U.S. Well timed for the August 2017 eclipse over North America, it show...

Totality: Eclipses of the Sun

By Mark Littmann

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Totality: Eclipses of the Sun

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Totality

By Ken Willcox, Fred Espenak, Mark Littmann

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Eclipse 2017

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Eclipse 2024

By Mark Littmann

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Personalized Prince Baby Toddler T-Shirt

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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.