Mark E. Kelly Books

Mousetronaut goes to Mars

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A mouse stowaway on NASA's first human mission to Mars becomes a hero when one of the landing craft's engines fails. Includes facts about Mars. A mouse stowaway on NASA's first human mission to Ma...

Astrotwins

By Mark E. Kelly

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"Young Mark Kelly and his brother and friends decide to build a rocket over the summer when their constant bickering starts to annoy their grandfather in this middle-grade novel based on the NASA a...

Astrotwins

By Mark E. Kelly

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Astrotwins Project Rescue

By Mark Kelly

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Mousetronaut

By Mark E. Kelly

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A small, but plucky, mouse named Mike is sure that he can help the Space Shuttle astronauts, and ends up saving the whole mission.

Mousetronaut

By Mark E. Kelly

Average: 0.00, 0 Ratings

A small, but plucky, mouse named Mike is sure that he can help the Space Shuttle astronauts, and ends up saving the whole mission.

Mousetronaut goes to Mars

By Mark E. Kelly

Average: 0.00, 0 Ratings

A mouse stowaway on NASA's first human mission to Mars becomes a hero when one of the landing craft's engines fails. Includes facts about Mars. A mouse stowaway on NASA's first human mission to Ma...

Astrotwins

By Mark E. Kelly

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"Mark Kelly and his twin brother are back for more outer space adventure, this time fixing up an abandoned Apollo command module and taking off to rescue a Russian cosmonaut who is stranded in spac...

Astrotwins Project Rescue

By Martha Freeman, Mark Kelly

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Ratonauta

By C. F. Payne, Alexis Romay, Mark Kelly

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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.