Comins Neil F. Books

What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System

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An astronomer and author explores ten examples of what Earth would be like if conditions in the universe were slightly altered, in a fascinating journey into scientific scenarios.

What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been

By Comins Neil F.

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What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been

By Comins Neil F.

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Heavenly Errors

By Comins Neil F.

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Heavenly Errors

By Comins Neil F.

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John Allen Paulos, author of Innumeracy and A Mathematician Reads the Newspaper:Although ostensibly about astronomy, Comins's Heavenly Errors effectively uses common (mis)conceptions about the subj...

What If the Moon Didnt Exist

By Comins Neil F.

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Discovering the Essential Universe Astronomy Online

By Timothy F. Slater, Comins Neil F.

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Discovering the Universe CD Rom Once and Future Cosmos Astronomy Online

By Timothy F. Slater, Thomas Krause, Comins Neil F.

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Discovering the Universe CD Rom Reader

By Thomas Krause, Comins Neil F.

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Discovering the Universe 7e Clicker

By Comins Neil F.

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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.