Andrew Fazekas Books

Science Perspective 9 Student Edition

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National Geographic Backyard Guide to the Night Sky, 2nd Edition

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Revel in the skies above with this handy stargazing guide, complete with constellation charts and expert tips for observing—and understanding—the wonders of the universe.Detailed visual...

Sciences Perspectives 9

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Star Trek The Official Guide to Our Universe

By Andrew Fazekas

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This book reveals the science behind Star Trek’s beloved fictions about the universe, inviting readers to gaze up at the night sky and observe where the Starfleet has gone. Many of the galact...

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.